Arbor Low

The monument includes about 50 large limestone blocks, quarried from a local site, which form an egg-shaped circle. There were probably 41–43 stones originally, but some are now in fragments. They range in size from 1.6 to 2.1 metres (5 ft 3 in to 6 ft 11 in), with monoliths of between 2.6 and 2.9 metres (8 ft 6 in and 9 ft 6 in). One stone is partially upright and the rest lie flat. Although it is often stated that the stones never stood upright, it is possible that they were originally set upright in shallow stone holes. In the centre of the circle lie at least six smaller blocks known as the cove, originally believed to have been set in a rectangle.

The stones are surrounded by an earth bank approximately 90 by 85 metres (295 by 279 ft) at the outside edges and 2 metres (6 ft 7 in) high, with an interior ditch about 2 metres deep and 7 to 10 metres (23 to 33 ft) wide. Two causeway entrances breach both bank and ditch: a north-west entrance 9 metres (30 ft) wide and a south-east entrance 6 metres (20 ft) wide. The inner bank encloses an area of 52 by 40 metres (171 by 131 ft).

Human skeletal remains were discovered close to the cove during excavations between 1901 and 1902. Other finds have included flint scrapers, arrowheads, and bone and antler tools.