Mynydd Twyn-glas is a 472m high hill in South Wales, between Cwmbran and Newbridge / Crumlin. It is the highest hill in Caerphilly, but not the highest point – which is Pen March (535m) and Methyr Common (531).
It offers great views of the Bristol Channel and Newport to the South, Twmbarlwm Hill fort to the West, Abergavenny hills to the East and the Brecon Beacons to the North.
The Cambrian Way route follows this high ridgeway to Pontypool, and you can follow it from Mynydd Twyn-glas in that direction, or to Twmbarlwm the other way.
This is a really nice 3.1 mile walk with only a small and gentle ascent, given that you are parking high up. The parking has room for a few cars in the spot marked by the route, but you can park further along in a few laybys offering room for plenty of cars.
This is a really nice walk on broad gravel roads / tracks over open moorland full of wildlife with great views of the surrounding area, highly recommended hill to tick off.