Possibly the highest round barrow in Wiltshire, overlooking Adam's Grave.
Although now destroyed, this may have once been a chambered round barrow judging by the amount of sarsen scattered around the site. Whoever desecrated this barrow made a point of tearing the internal structure apart.
The area around Adams Grave and the Ridgeway car park has been updated.
The old footpath route has been removed and a new set of gates lead the visitor around Walker's Hill Barrows and along the field boundary onto the White Horse Trail. This is a much improved surface and could possibly carry a wheelchair or pushchair.
Bronze Age bowl barrow, listed by Grinsell as Alton 1, located on Milk Hill just to the north of the white horse. The mound is 32 metres in diameter and up to 1.8 metres high, and is surrounded by a ditch. There is a deep central excavation, though no details are known concerning its origins.
(SU 10716387) Tumulus (NR) (1)
Above the White Horse - Alton 1; ditched Bowl barrow, 24 paces x 5 ft, with central hollow in the mound. (2)
A turf-covered ditched bowl barrow in generally good condition. Overall diameter 32.0m, mound 1.8m high. Upcast from a now 0.8m deep central excavation creates a false height of 2.3m on SE quadrant. Ditch, average 4.5m wide and 0.4m deep. Published
1:2500 survey revised. (3)
The possible Bronze Age bowl barrow described by the previous authorities has been mapped from aerial photographs. (4)