The Bridestones (Chambered Cairn)

The Bridestones are a set of Neolithic standing stones in the UK: The stones are the damaged remains of the chambered cairn from about 3500-2400 BC. The remaining compartment is 6 metres (20 ft) long by 2.7 metres (8.9 ft) wide, and consists of vertical stone slabs, divided by a now-broken cross slab. The cairn originally had a stone circle surrounding it, with four portal stones; two of these portal stones still remain.

The site is a scheduled ancient monument.