Cwm-llwch is a no-frills camping field situated at the foot of Pen y Fan and Corn Du in the central Brecon Beacons, reached via a narrow country lane.

The site sits alongside the Nant Cwm-llwch stream, which also serves as the only water source, and offers open mountain views in a remote, peaceful setting. It is suitable for solo travellers, families, and groups seeking a taste of wild camping.

There are no facilities on site. A track runs through the field and continues up to Llyn Cwm Llwch before climbing to Corn Du and Pen y Fan, making the campsite a natural base for hiking the Brecon Beacons.

The land is National Trust-managed Old Red Sandstone terrain shaped by glaciation.