Today I visited an area of the Brecon Beacons between Llangorse Lake and the A40 as part of my Brecon Beacons Ambassador scheme. There are many hillforts in the area, one of which Pen y Crug which is very close to the coach house. The Iron Age hillfort we visited today does not have the five rings where the embankments were but does have an ancient burial mound.
Allt-yr-Esgair is a hill with panoramic views of the Usk Valley to the west and south and across Llangorse Lake to the Black Mountains to the northeast. In Welsh, Allt-yr-Esgair means wooded slope of the ridge. Locally, the hill is known as The Allt.The summit (393m) is crowned by a hillfort presumed to be of Iron Age origin, one of several in the Usk Valley. The Roman road that links the Roman fort of CICVCIVM at Y Gaer, Brecon and Gobannium at Abergavenny runs along the ridge.
The actual area had become overgrown with bracken and trees and was no longer supporting the wildlife. The farm adjoining the Allt proposed a clearance plan and introducing Highland cattle who are able to graze these exposed areas. Within a few years the grazing has restored the Allt to the open upland it used to be, along with the wildlife.