Including Carreg Ddefod Falls.
From Cardiff, take the A470 to Llan Ffestiniog. From Llan Ffestiniog, immediately before passing under the railway bridge at the start of the village, turn right onto the B4391, signposted to Bala. After passing the deep Cwm Cynfal valley, turn left onto the B4407, signposted to Ysbyty Ifan. After 3 miles, park near the first (and pretty much only) house on the left. SH 7808 4462. (If you want to view Carreg Ddefod Falls from the road, drive a little further on, until you can see the top of the waterfall back over your shoulder to the right.)
To approach the waterfall, stand on the road directly in front of the house. Turn to face away from the house, and walk across the Migneint bog ahead, towards the river. The Carreg Ddefod Falls can soon be seen on the far side of a ruined house. They are not very impressive in normal flow, but at least the view over the wild Migneint plateau towards the Arenigau mountains is rewarding.
After the presumed disappointment of the waterfalls, go back to the house, and take the track on its left side, and follow it for a little over 1 km to Llyn Conwy, the source of the Afon Conwy. Once you have seen what you want to see, return the same way (while there are other paths from here, they invariably have to cross the bog and energy-sapping heather - this is not a comfortable place to walk).
Whilst every care has been taken in the compilation of this description, neither the author nor his fellow walkers can accept responsibility for loss or injury arising from any errors, omissions or inaccuracies in this description. This description is intended as a guide only, and you should select a route to suit your own abilities, at your own discretion. Ability requirements are a guide only. You follow this description at your own risk.