There are three of these mysterious long earthen mounds in the Ridgeway area. There use is unknown, but they must have been impressive sights in there day, 5,000 or so years ago. The sites are also associated with later monuments
195m long and 20m wide, the barrow makes an important statement at Martinsdown , alongside the present A35 Bridport to Dorchester road.
Long before this hill was constructed into a hill fort a bank barrow was built along its top. Around 545m long the barrow is still visible in the centre of the site.
This bank barrow is about 180m long and the site now includes a group of Bronze Age Round Barrows.