Ogof Tarddiad Rhymni trip 02/01/2022
Unless otherwise stated, camera, setups, lighting, edits and gallery effects by Tarquin. Modelling and lighting at various points will be Pete Bolt.
Also spelled Ogof Tarddiad Rhymney in English (two words in Welsh, and the remaining word needing to be pronounced with Welsh rules - go figure). This cave was found in 1993 by Grwp Ogofedd Craig a Ffynnon, while the quarry was still working. The quarry closed two years later. The cave has been pushed to 1.6 km in length, making it the longest cave under Cefn yr Ystrad. However, only about half of that length actually gets visited on a normal trip.
The route to the cave starts at the village of Trefil. In the past, you could rive down the road all the way to the cave's quarry, but the owners of the road run a different quarry, and have now put a barrier across the road, preventing its use. They also have signs saying that if the road gets used during hours when the barrier is open, they will confiscate your car. Fun. So now it is a 6.1 km walk in each direction to reach the cave. And it was raining.
Modelling by Pete
Pond on the Nant Trefil, taking a lot of water, thanks to the rain. Most caves in this area resurge next to the next reservoir downstream, at Ffynnon Siôn Sieffre. However, Ogof Tarddiad Rhymni is different, and resurges one valley further west, at the Rhymni Risings. Rather unusually, it also seems to be in the lower limestone beds, unlike most other caves in the area.
It is a really long way to the cave. Those trees are significantly less than half way there.
Beyond the forest, where the track runs along the top of Dyffryn Crawnon. The wind increased by a factor of 10, and the rain was being pelted towards us for the rest of the walk. This picture makes it look lovely, but it truly was miserable. That spring on the right, incidentally, often runs. It sits roughly above Ogof Pyrgad, a small resurgence cave with a lot of water. The quarry on the left is Cwar Blaen-duffryn, and the low hills behind it are Bryniau Gleision (538 metres) and Pant y Creigiau (565 metres), forming the ridge that connects to the main Brecon Beacons at Torpantau. The peak of Tor y Foel (551 metres) is barely visible on the right.
Very visible normal dip slip fault in Cwar Blaen-dyffryn quarry. The right side has dropped about 4 metres from its natural position. The Llanelly Shales can be seen as a layer of powdery rubble just over half way up.
Dip slip fault at the other end of the same quarry, where the positioning returns to normal. The nodular bed, which features so prominantly in Agen Alwedd, is visible at the top right. The shales generally prevent caves from passing from one bed of limestone to the other. However, in this location, the fault has slipped far enough for it to be actually possible. Most caves in this area are in the upper limestone beds (Dowlais) like Carno Adit Cave, Chartist's Cave, Crescent Cave, and Ogof Ap Robert, just like Ogof Ffynnon Ddu and Dan yr Ogof to the west. Ogof Tarddiad Rhymni is a major exception, being in the lower beds (Abercriban Oolite) like the major caves to the east; Agen Allwedd, Daren Cilau, Craig a Ffynnon and Ogof Draenen.
Modelling by Pete
Looking back towards Cwar Blaen-dyffryn. The massive earth pile on the right is landfill, being put there by the active quarry further back towards Trefil.
On the northern side of the track at Blaen-dyffryn Crawnon is a large resurgence. It looks like a bridge, but there is nothing on the other side of the track, just the foundations of a former building.
The amount of water is pretty spectacular, and if this is a natural resurgence, suggests a big drainage area, and a substantial cave. However, the concrete makes it look more like a closed adit. This is not included in the cave registry.
Two small resurgences in the bank that separates Cwar yr Hendre. These sit about 175 m west of Ogof Fawr Trefil (a 95 metre stump of cave), and are also not in the registry.
One of the ponds above Cwar yr Hendre. The visible buildings will be visited after the trip.
Eastern entrance to Cwar yr Ystrad, the quarry containing the cave.
Modelling by Pete
Hmmm. Yeah.
Cwar yr Ystrad. The large, flat area seen on the right here was used as the planet Vogsphere in Hitchhiker's Guide To The Galaxy. Try to rush across it, do not to think of anything, and watch out for Vogon slapsticks. The pillar of unquarried rock is the landmark identifying the cave's location; the entrance is in the quarry face beside the pond on its left side, seen here.
Modelling by Pete and Pete
The low spot at the eastern end of the quarry, where the early track leads down. There are no known caves in this part of the quarry.
The pillar and pond. The cave entrance can be seen on the left here.
Modelling by Pete
The entrance, seen over the pond. The way in is on the left side of the top of the scree slope, and has a dry stone wall in front of it (to make it less obvious). The entrance to the Ogof Gwybedyn is just to the right of the picture, and almost connects to Nant Criban. The heavy rain can be seen striking the pond's surface, and the pond itself seems to be the source of the main stream in the cave.
The short climb just inside the entrance.
Modelling by Pete, lighting by Tarquin, Pete and Sol
The main stream in high flow, starting immediately inside the entrance.
The passage is immediately large. Clearly this is a former major drain, carrying a relatively small, likely invasive stream.
Modelling by Pete, lighting by Tarquin and Pete
Part of the reson for this visit (apart from to admire this impressive trunk passage that storms through the mountain) was to search for cryogenic formations. The cave has extensive ice age breakdown, and would otherwise seem like a good candidate. However, it immediately became apparent that there was no chance they would be found here. The cave simply has far too much recent alluvial deposit. Any cryogenics would have been washed away, or covered in sediment.
Modelling by Pete, lighting by Tarquin and Pete
The cave does not have any big or impressive formations, but much of the passage has small formations like these.
An aven full of flowstone, the largest amount of stal in the cave.
Modelling by Pete, lighting by Tarquin and Pete
Giant block of calcite below the aven.
When the passage almost chokes with boulders and mud, the way on is to crawl along an undercut to regain the passage.
Modelling by Pete, lighting by Tarquin and Pete
Another point where the passage nearly pinches out. The stream goes to the left, humans fit to the right.
Modelling by Pete, lighting by Tarquin and Pete
The cave briefly intersects the nodular bed. These appear to be fossilised brain corals, with the growth visible as splayed crystals in the cross sections.
A low area with ceiling collapse. The rocks are covered with white deposits, but these appear to be fragments of shale or gympsum, not cryogenics.
Modelling by Pete, lighting by Tarquin and Pete
The first big section starts immediately afterwards.
Modelling by Pete, lighting by Tarquin and Pete
A climb up on the left reaches what I think is Bodengo Passage.
Modelling by Pete, lighting by Tarquin and Pete
Bodengo Passage passes through an extremely tight squeeze, and is a series of very small passages, with a stream. It ends too tight.
Modelling by some guano
The first big section. Ahead then shrinks, and becomes Nant Criban. The way on is that shadowy arch on the left, in the distance.
Modelling by Pete, lighting by Tarquin and Pete
The passage gradient now becomes significantly steeper, with sand banks. This appears to be a more recent development, but if so, then the older development must be somewhere else, and has not been found.
Modelling by Pete, lighting by Tarquin and Pete
Sediment banks.
Inlets in the left wall. Perhaps these are the water from Bodengo Passage.
The passage then grows in size, as another inlet comes in from the right.
Modelling by Pete, lighting by Tarquin and Pete
The inlet is hidden over rocks to the right.
The inlet then pinches out with a visual connection into Nant Lwyd, the source of the water.
Formations in the main passage.
Formations.
Formations.
Shrinking again.
Modelling by Pete, lighting by Tarquin and Pete
Formations.
The slope finally starts to ease off.
Modelling by Pete, lighting by Tarquin and Pete
Exposed drip pocket.
False floor hidden in the mud.
Ripples in the sand.
Lighting by Pete
Sand formations.
Lighting by Pete
The passage grows a little. This area looked like a prime candidate for cryogenic formations, but none were found.
Modelling by Pete, lighting by Tarquin and Pete
Stal below the sand, being exposed by drips.
Formations.
The last section of passage below the choke.
Modelling by Pete, lighting by Tarquin and Pete
Heavily calcited rift. Sadly it is heavily muddied (naturally), so it does not have any bright colours. It closes down at both the lower and upper levels.
Starting into the Choke.
Modelling by Pete, lighting by Tarquin and Pete
It looks like some digging was actually required here, but even so, this is a very simple discovery, with hardly any work needed to find the cave. There do not appear to be any side passages hidden in the choke.
Modelling by Pete, lighting by Tarquin and Pete
The choke ends with a small ascent.
Modelling by Tarquin's welly and Pete, lighting by Tarquin and Pete
After the choke, the grand size returns with a vengeance.
Modelling by Pete, lighting by Tarquin and Pete
The largest passage in the cave, just beyond the choke. An alcove in the left wall is just that; an alcove. There is a rift there too, filled with rubble and mud. It does not seem to be a missing way on.
Modelling by Pete, lighting by Tarquin and Pete
The passage size then abruptly changes, narrowing to a rift. From this point onwards, it is called Nant Rhymni.
Modelling by Pete, lighting by Tarquin and Pete
Exactly what happened to the cave's grandure appears to be more to do with the geology than a missing passage. Perhaps this is a former sump, and phreatic corrosion was not as effective as vadose abrasion. Or perhaps the rock is just tougher here.
Modelling by Pete, lighting by Tarquin and Pete
Then it becomes much lower, and a lot less inviting. The gradient is far more gentle than before.
Modelling by Pete, lighting by Tarquin and Pete
The passage then becomes a very miserable low crawl in the water, for 250 metres, with no reward for the effort. There is an aven 50 metres before the end with 50 metres of rift passages up a climb; Ffordd Swnd. What a disappointing end to a very grand passage.
Modelling by Pete, lighting by Tarquin and Pete
Nant Criban, the major side passage, starts as a slope up rocks.
Modelling by Pete, lighting by Tarquin and Pete
Heading through a small ruckle.
Modelling by Pete, lighting by Tarquin and Pete
Becoming low over sand, passing over the way into Nant Lwyd.
Modelling by Pete, lighting by Tarquin and Pete
Formations in a little enlargement.
The next set of formations, where the passage starts to enlarge more significantly, are among the best in the cave. That is not saying much.
Modelling by Pete, lighting by Tarquin and Pete
Formations.
The best of the formations.
The enlargement turns into a chamber, the largest part of Nant Criban. The dig on the left goes nowhere. The crawl on the right is the way on. Maybe the dig is following the original course of the passage though, which would explain the size change of the main passage at this point.
Modelling by Pete, lighting by Tarquin and Pete
Formations in the chamber.
Start of the crawl.
The crawl is 80 metres long, and has a couple of tight sections, but then regains the large passage, with a stream. This can be followed back almost all the way to Ogof Gwybedyn, but the passage pinches out before connecting. Today was not the day, so this was left for a different trip.
Dropping down the slot in the floor into Nant Lwyd.
Modelling by Pete, lighting by Tarquin and Pete
The slot drops down into a larger fragment of passage running below the floor of the Nant Criban crawls.
Modelling by Pete, lighting by Tarquin and Pete
Curtain in Nant Lwyd.
The Nant Criban stream is met, coming in through the boulders. At this point, the passage is below the floor of the chamber in Nant Criban. This is not the way on.
Modelling by Pete, lighting by Tarquin and Pete
The way on is to drop down a hole into another undercut, heading downstream with the Nant Criban water.
The undercut then reaches a junction with the Nant Lwyd stream.
Modelling by Pete, lighting by Tarquin and Pete
Downstream has upper and lower options, which join and become too tight, with a visual connection to the inlet in the main passage.
Modelling by Pete, lighting by Tarquin and Pete
Waterfall in the lower option.
Heading upstream through a rocky patch.
Modelling by Pete, lighting by Tarquin and Pete
It does briefly get a little bigger upstream, but only for about 20 metres.
Modelling by Pete, lighting by Tarquin and Pete
It then gets smaller, and appears to stay smaller. So we gave it a miss. It should end after another 30 metres.
Mud formations in Nant Lwyd.
Mud formations.
After our trip, we went to explore some of the old quarry buildings.
From the top, the structures look really out of place.
These odd structures appear to have been hoppers. A lorry could driver underneath, and have material tipped into it.
One of the two open, sloping tunnels, heading down into the hillside. These appear to have been conveyor-ways.
Sloping very steeply down.
Lighting by Tarquin and Sol
Formations in the tunnel.
View from the bottom.
Modelling by Pete, lighting by Tarquin and Sol
Junk pile at the bottom of the conveyor-way.
Lighting by Tarquin and Sol
Someone apparently did not enjoy the trip down here.
Modelling by Shaun, lighting by Tarquin and Sol
The quick way in. Ask Shaun how well that went.
Lighting by Tarquin and Sol
Walkway leading back out at the bottom of the conveyor-way.
Lighting by Tarquin and Sol
Exit from the walkway.
Modelling by Pete
The main group of buildings.
Shaun's entrance, in the middle of the courtyard.
Stone wall at the buildings. Hrms.
Shorter conveyor-way back up to the upper bench.
Heading down a quarry bench to the next set of buildings, at the northern part of Cwar yr Hendre. The landscaped area in front is also a former part of the quarry. Allt Lwyd (654 metres) and Tor y Foel can be seen in the distance.
Modelling by Pete
Large pit in front of the buildings.
Foundations of a few more buildings beside the track.
Modelling by Pete
The route to the cave starts at the village of Trefil. In the past, you could rive down the road all the way to the cave's quarry, but the owners of the road run a different quarry, and have now put a barrier across the road, preventing its use. They also have signs saying that if the road gets used during hours when the barrier is open, they will confiscate your car. Fun. So now it is a 6.1 km walk in each direction to reach the cave. And it was raining.
Modelling by Pete
Pond on the Nant Trefil, taking a lot of water, thanks to the rain. Most caves in this area resurge next to the next reservoir downstream, at Ffynnon Siôn Sieffre. However, Ogof Tarddiad Rhymni is different, and resurges one valley further west, at the Rhymni Risings. Rather unusually, it also seems to be in the lower limestone beds, unlike most other caves in the area.
It is a really long way to the cave. Those trees are significantly less than half way there.
Beyond the forest, where the track runs along the top of Dyffryn Crawnon. The wind increased by a factor of 10, and the rain was being pelted towards us for the rest of the walk. This picture makes it look lovely, but it truly was miserable. That spring on the right, incidentally, often runs. It sits roughly above Ogof Pyrgad, a small resurgence cave with a lot of water. The quarry on the left is Cwar Blaen-duffryn, and the low hills behind it are Bryniau Gleision (538 metres) and Pant y Creigiau (565 metres), forming the ridge that connects to the main Brecon Beacons at Torpantau. The peak of Tor y Foel (551 metres) is barely visible on the right.
Very visible normal dip slip fault in Cwar Blaen-dyffryn quarry. The right side has dropped about 4 metres from its natural position. The Llanelly Shales can be seen as a layer of powdery rubble just over half way up.
Dip slip fault at the other end of the same quarry, where the positioning returns to normal. The nodular bed, which features so prominantly in Agen Alwedd, is visible at the top right. The shales generally prevent caves from passing from one bed of limestone to the other. However, in this location, the fault has slipped far enough for it to be actually possible. Most caves in this area are in the upper limestone beds (Dowlais) like Carno Adit Cave, Chartist's Cave, Crescent Cave, and Ogof Ap Robert, just like Ogof Ffynnon Ddu and Dan yr Ogof to the west. Ogof Tarddiad Rhymni is a major exception, being in the lower beds (Abercriban Oolite) like the major caves to the east; Agen Allwedd, Daren Cilau, Craig a Ffynnon and Ogof Draenen.
Modelling by Pete
Looking back towards Cwar Blaen-dyffryn. The massive earth pile on the right is landfill, being put there by the active quarry further back towards Trefil.
On the northern side of the track at Blaen-dyffryn Crawnon is a large resurgence. It looks like a bridge, but there is nothing on the other side of the track, just the foundations of a former building.
The amount of water is pretty spectacular, and if this is a natural resurgence, suggests a big drainage area, and a substantial cave. However, the concrete makes it look more like a closed adit. This is not included in the cave registry.
Two small resurgences in the bank that separates Cwar yr Hendre. These sit about 175 m west of Ogof Fawr Trefil (a 95 metre stump of cave), and are also not in the registry.
One of the ponds above Cwar yr Hendre. The visible buildings will be visited after the trip.
Eastern entrance to Cwar yr Ystrad, the quarry containing the cave.
Modelling by Pete
Hmmm. Yeah.
Cwar yr Ystrad. The large, flat area seen on the right here was used as the planet Vogsphere in Hitchhiker's Guide To The Galaxy. Try to rush across it, do not to think of anything, and watch out for Vogon slapsticks. The pillar of unquarried rock is the landmark identifying the cave's location; the entrance is in the quarry face beside the pond on its left side, seen here.
Modelling by Pete and Pete
The low spot at the eastern end of the quarry, where the early track leads down. There are no known caves in this part of the quarry.
The pillar and pond. The cave entrance can be seen on the left here.
Modelling by Pete
The entrance, seen over the pond. The way in is on the left side of the top of the scree slope, and has a dry stone wall in front of it (to make it less obvious). The entrance to the Ogof Gwybedyn is just to the right of the picture, and almost connects to Nant Criban. The heavy rain can be seen striking the pond's surface, and the pond itself seems to be the source of the main stream in the cave.
The short climb just inside the entrance.
Modelling by Pete, lighting by Tarquin, Pete and Sol
The main stream in high flow, starting immediately inside the entrance.
The passage is immediately large. Clearly this is a former major drain, carrying a relatively small, likely invasive stream.
Modelling by Pete, lighting by Tarquin and Pete
Part of the reson for this visit (apart from to admire this impressive trunk passage that storms through the mountain) was to search for cryogenic formations. The cave has extensive ice age breakdown, and would otherwise seem like a good candidate. However, it immediately became apparent that there was no chance they would be found here. The cave simply has far too much recent alluvial deposit. Any cryogenics would have been washed away, or covered in sediment.
Modelling by Pete, lighting by Tarquin and Pete
The cave does not have any big or impressive formations, but much of the passage has small formations like these.
An aven full of flowstone, the largest amount of stal in the cave.
Modelling by Pete, lighting by Tarquin and Pete
Giant block of calcite below the aven.
When the passage almost chokes with boulders and mud, the way on is to crawl along an undercut to regain the passage.
Modelling by Pete, lighting by Tarquin and Pete
Another point where the passage nearly pinches out. The stream goes to the left, humans fit to the right.
Modelling by Pete, lighting by Tarquin and Pete
The cave briefly intersects the nodular bed. These appear to be fossilised brain corals, with the growth visible as splayed crystals in the cross sections.
A low area with ceiling collapse. The rocks are covered with white deposits, but these appear to be fragments of shale or gympsum, not cryogenics.
Modelling by Pete, lighting by Tarquin and Pete
The first big section starts immediately afterwards.
Modelling by Pete, lighting by Tarquin and Pete
A climb up on the left reaches what I think is Bodengo Passage.
Modelling by Pete, lighting by Tarquin and Pete
Bodengo Passage passes through an extremely tight squeeze, and is a series of very small passages, with a stream. It ends too tight.
Modelling by some guano
The first big section. Ahead then shrinks, and becomes Nant Criban. The way on is that shadowy arch on the left, in the distance.
Modelling by Pete, lighting by Tarquin and Pete
The passage gradient now becomes significantly steeper, with sand banks. This appears to be a more recent development, but if so, then the older development must be somewhere else, and has not been found.
Modelling by Pete, lighting by Tarquin and Pete
Sediment banks.
Inlets in the left wall. Perhaps these are the water from Bodengo Passage.
The passage then grows in size, as another inlet comes in from the right.
Modelling by Pete, lighting by Tarquin and Pete
The inlet is hidden over rocks to the right.
The inlet then pinches out with a visual connection into Nant Lwyd, the source of the water.
Formations in the main passage.
Formations.
Formations.
Shrinking again.
Modelling by Pete, lighting by Tarquin and Pete
Formations.
The slope finally starts to ease off.
Modelling by Pete, lighting by Tarquin and Pete
Exposed drip pocket.
False floor hidden in the mud.
Ripples in the sand.
Lighting by Pete
Sand formations.
Lighting by Pete
The passage grows a little. This area looked like a prime candidate for cryogenic formations, but none were found.
Modelling by Pete, lighting by Tarquin and Pete
Stal below the sand, being exposed by drips.
Formations.
The last section of passage below the choke.
Modelling by Pete, lighting by Tarquin and Pete
Heavily calcited rift. Sadly it is heavily muddied (naturally), so it does not have any bright colours. It closes down at both the lower and upper levels.
Starting into the Choke.
Modelling by Pete, lighting by Tarquin and Pete
It looks like some digging was actually required here, but even so, this is a very simple discovery, with hardly any work needed to find the cave. There do not appear to be any side passages hidden in the choke.
Modelling by Pete, lighting by Tarquin and Pete
The choke ends with a small ascent.
Modelling by Tarquin's welly and Pete, lighting by Tarquin and Pete
After the choke, the grand size returns with a vengeance.
Modelling by Pete, lighting by Tarquin and Pete
The largest passage in the cave, just beyond the choke. An alcove in the left wall is just that; an alcove. There is a rift there too, filled with rubble and mud. It does not seem to be a missing way on.
Modelling by Pete, lighting by Tarquin and Pete
The passage size then abruptly changes, narrowing to a rift. From this point onwards, it is called Nant Rhymni.
Modelling by Pete, lighting by Tarquin and Pete
Exactly what happened to the cave's grandure appears to be more to do with the geology than a missing passage. Perhaps this is a former sump, and phreatic corrosion was not as effective as vadose abrasion. Or perhaps the rock is just tougher here.
Modelling by Pete, lighting by Tarquin and Pete
Then it becomes much lower, and a lot less inviting. The gradient is far more gentle than before.
Modelling by Pete, lighting by Tarquin and Pete
The passage then becomes a very miserable low crawl in the water, for 250 metres, with no reward for the effort. There is an aven 50 metres before the end with 50 metres of rift passages up a climb; Ffordd Swnd. What a disappointing end to a very grand passage.
Modelling by Pete, lighting by Tarquin and Pete
Nant Criban, the major side passage, starts as a slope up rocks.
Modelling by Pete, lighting by Tarquin and Pete
Heading through a small ruckle.
Modelling by Pete, lighting by Tarquin and Pete
Becoming low over sand, passing over the way into Nant Lwyd.
Modelling by Pete, lighting by Tarquin and Pete
Formations in a little enlargement.
The next set of formations, where the passage starts to enlarge more significantly, are among the best in the cave. That is not saying much.
Modelling by Pete, lighting by Tarquin and Pete
Formations.
The best of the formations.
The enlargement turns into a chamber, the largest part of Nant Criban. The dig on the left goes nowhere. The crawl on the right is the way on. Maybe the dig is following the original course of the passage though, which would explain the size change of the main passage at this point.
Modelling by Pete, lighting by Tarquin and Pete
Formations in the chamber.
Start of the crawl.
The crawl is 80 metres long, and has a couple of tight sections, but then regains the large passage, with a stream. This can be followed back almost all the way to Ogof Gwybedyn, but the passage pinches out before connecting. Today was not the day, so this was left for a different trip.
Dropping down the slot in the floor into Nant Lwyd.
Modelling by Pete, lighting by Tarquin and Pete
The slot drops down into a larger fragment of passage running below the floor of the Nant Criban crawls.
Modelling by Pete, lighting by Tarquin and Pete
Curtain in Nant Lwyd.
The Nant Criban stream is met, coming in through the boulders. At this point, the passage is below the floor of the chamber in Nant Criban. This is not the way on.
Modelling by Pete, lighting by Tarquin and Pete
The way on is to drop down a hole into another undercut, heading downstream with the Nant Criban water.
The undercut then reaches a junction with the Nant Lwyd stream.
Modelling by Pete, lighting by Tarquin and Pete
Downstream has upper and lower options, which join and become too tight, with a visual connection to the inlet in the main passage.
Modelling by Pete, lighting by Tarquin and Pete
Waterfall in the lower option.
Heading upstream through a rocky patch.
Modelling by Pete, lighting by Tarquin and Pete
It does briefly get a little bigger upstream, but only for about 20 metres.
Modelling by Pete, lighting by Tarquin and Pete
It then gets smaller, and appears to stay smaller. So we gave it a miss. It should end after another 30 metres.
Mud formations in Nant Lwyd.
Mud formations.
After our trip, we went to explore some of the old quarry buildings.
From the top, the structures look really out of place.
These odd structures appear to have been hoppers. A lorry could driver underneath, and have material tipped into it.
One of the two open, sloping tunnels, heading down into the hillside. These appear to have been conveyor-ways.
Sloping very steeply down.
Lighting by Tarquin and Sol
Formations in the tunnel.
View from the bottom.
Modelling by Pete, lighting by Tarquin and Sol
Junk pile at the bottom of the conveyor-way.
Lighting by Tarquin and Sol
Someone apparently did not enjoy the trip down here.
Modelling by Shaun, lighting by Tarquin and Sol
The quick way in. Ask Shaun how well that went.
Lighting by Tarquin and Sol
Walkway leading back out at the bottom of the conveyor-way.
Lighting by Tarquin and Sol
Exit from the walkway.
Modelling by Pete
The main group of buildings.
Shaun's entrance, in the middle of the courtyard.
Stone wall at the buildings. Hrms.
Shorter conveyor-way back up to the upper bench.
Heading down a quarry bench to the next set of buildings, at the northern part of Cwar yr Hendre. The landscaped area in front is also a former part of the quarry. Allt Lwyd (654 metres) and Tor y Foel can be seen in the distance.
Modelling by Pete
Large pit in front of the buildings.
Foundations of a few more buildings beside the track.
Modelling by Pete