Three Brothers of Grugith

The Three Brothers of Grugith is a prehistoric site, a dolmen of the Neolithic Age, near St Keverne in Cornwall, England [1]. It is a scheduled monument [1]. The dolmen is situated near the summit of a hill overlooking Goonhilly Downs [1]. Two orthostats support a capstone; there are depressions on the capstone which may be cup marks, or may be naturally formed [1]. The chamber enclosed by the stones measures about 4 by 2 metres (13.1 by 6.6 ft), height about 1 metre (3 ft 3 in) [1]. William Copeland Borlase excavated the chamber in 1872: he discovered a pit about 1 metre (3 ft 3 in) deep, and one flint flake [1].