Cwm Nant Roman marching camp, measures 280m by 180m, is oriented NW-SE, and set on fairly level ground, close to the line of the Castell Collen - Caersws Roman Road (RRX58, Nprn304960). It is best preserved to the SE, where there is a centrally placed interned, clavicular, entrance; the remains are also upstanding at the N angle.

Sources: St Joseph 1969 (JRS59), 123;
Davies, J.L. & Jones, R.H. 2006. Roman Camps in Wales and the Marches. University of Wales Press: Cardiff. pp 130-132

Further Roman marching camps are known, 5.0km to the SE, at Nantmel (Nprn157545), & 6.5km to the WSW, at Esgair Perfedd (Nprn261456).

T. Driver, RCAHMW