Throughout my caving career, I have been involved in the original exploration of the following passage:
| Length | Cave | Area | Comment |
|---|---|---|---|
| Over 1307 m | Ogof Draenen | Hexamine Highways | Over 1 km |
| Dogleg Complex | 85 m | ||
| Black Beetle side passages | 71 m | ||
| Under Underworld | Over 50 m | ||
| Wyvern Extensions | Over 30 m | ||
| end of Luck Of The Draw | Over 20 m | ||
| start of Luck Of The Draw | About 20 m | ||
| Wooden Spoon Passage oxbows | About 12 m | ||
| Big Country choke | About 8 m | ||
| Midwinter Chambers | 4 m | ||
| End of Gore Blimey | About 3 m | ||
| Agent Blorenge II | About 2 m | ||
| The Score | About 2 m | ||
| 188 m | South Towy Lead Mine - Dan-y-rhiw and Pwll y Plwm | Dan-y-rhiw | 175 m (rediscovered - mines cannot be discovered - had been partially visited by farmers) |
| Pwll y Plwm | 13 m (rediscovered - mines cannot be discovered - first descent of known shaft) | ||
| 112 m | Cystanog Lead Mine - Allt Cystanog Levels | Statham Extensions | Rediscovered (mines cannot be discovered) |
| Over 105 m | Crescent Cave | The Upper Level | Over 50 m |
| The Main Level - Right | About 20 m | ||
| The Main Level - Left | 15 m | ||
| The Highest Level | About 10 m | ||
| The Highest Level | 8 m | ||
| The Middle Level | Over 2.5 m | ||
| About 80 m | Ogof Pen Maelor | All of it | |
| Over 22 m | Carno Adit (all totally excavated) | Beyond Spurious | Over 20 m |
| Spurious | 2 m | ||
| About 123 m | Dan yr Ogof | Better Than Working | About 110 m |
| Not Far Now aven | About 6 m | ||
| Not Far Now choke | About 5 m | ||
| Not Far Now aven oxbow | About 2 m | ||
| The Main Level - Right | About 20 m | ||
| 12 m | Cystanog Lead Mine - Penlan Levels | Penlan Level 1 extension | Rediscovered (mines cannot be discovered) |
| About 10 m | Brechfa Lead Mine - Western Trial Adit | All of it | Rediscovered (mines cannot be discovered) |
| About 10 m | Carno | near Dune Chamber | Including a 4 m pot too tight 10 m to water |
| About 10 m | Ogof Marros | Sculpture Trail (Long in the Tooth Dig 1) | About 4 m |
| Long in the Tooth Dig 2 | About 4 m | ||
| Brew Chamber | About 2 m | ||
| 2.5 m | Tarquin Hole | All | Single drop |