"A good four-hour walk from the small car park by the bridge at the bottom of the Elan reservoir. Took the long sweeping route marked on the OS which goes in a wide loop around. Up good gravel track and then heading on past waterfalls to eventually reach the turn off for Gorllwyn, actually overextending for a bit because the marked path for Drygarn Fawr most come earlier from the right and I missed it. I think marked with wooden posts now as appeared when reencountered it. Just headed west along tracks and on high ground Drygarn becomes visible with its two prominent heads of assembled stone. Far reaching views. Trig point a tiny bit further west. Returned on more prominent path which passes Carreg-Yr-Ast but this route is not on OS. Went up this hill for a quick detour and then descended more directly down one of the noses of these hills that sniffle at the valley. At small sheep feeding station rejoining the gravel track. 14km. 4 hours. With AB " — vygodski • Jan 14, 2022