Rocktype Sandstone (hard)
Altitude 160m a.s.l
Bouldering @ Penallta © Gabe
Very popular with sub-E1 climbers (being good quality but also offering those grades). A two-star crag, with routes up to 22m.
Near Ystrad Mynach, visible behind the A472 (Ystrad Mynach to Nelson). From Y.M. go under both railway bridges, then 3rd exit from the roundabount, (from Nelson, 2nd left off the roundsbout) then immediate left into Tredomen Business Park.
Cross the railway bridge, then find the well-worn path to the crag (not the cycle track) - 2 mins. Usual rules about leaving nothing valuable or visible in the car apply.
Moderators Updates to this page are checked by a UKC volunteer goi.ashmore