Allt yr Esgair

Allt yr Esgair is a hill in the Brecon Beacons National Park in Powys, Wales.

It takes the form of a northwest-southeast aligned ridge which rises to a height of 393m (1289 feet) and which overlooks the valley of the River Usk to the west and south.

At a late stage in de-glaciation, the cols at either end of the ridge at the villages of Pennorth and Bwlch are believed to have conveyed water from a greatly enlarged Llangorse Lake into the Usk catchment.

A car park off the A40 road immediately south of the hill provides a convenient starting point for many walkers.

Allt yr Esgair's summit is crowned by an Iron Age hillfort,[4] one of several in the Usk Valley.