 Pertwood Down, on high ground to the west of Pertwood, has several barrows and traces of Celtic field systems, but all such remains lie outside the area of the former parish.Just to the north of Lower Pertwood Farm, the Romans, in building a straight road, unusually diverted their road around an ancient tumulus instead of going through it.In 1829, the Roman road near Pertwood was described as "still remarkably perfect".