Not much info on this one. Jeanette Ratcliffe in ‘Scilly’s Archaeological Heritage’ (Twelveheads Press, 1995) merely says “This entrance grave has a chamber extending almost its whole diameter. Nineteen simple cairns lie to the north and north-east.”
‘The Earth Mysteries Guide to Ancient Sites on the Isles of Scilly’ (Meyn Mamvro, 1995, revised 1996 & 1999) adds that the entrance grave is “30ft in diameter, with a chamber 4ft 9in wide in the middle, occupying almost its whole diameter. Four capstones remain”.