This is a large hillfort site on Breidden Hill which was occupied through the Bronze and Iron Ages into the Roman period. It is located on a ridge and the remains of the defensive ditch, stone inner bank and outer bank can be seen. Excavations have revealed timber roundhouses and other buildings existed within the fort. The site is located off the A483 and A458 northeast of Welshpool (Welsh: Y Trallwng) past Trewern towards Rodneys Column. Breidden Hill is an extinct volcanic hill.
Image: Rodney's Pillar on top of Breidden Hill. Llandreinio Bridge and Rodney's Pillar is a watercolour dated 1794 by John Ingleby (1749 - 1808)