langstone orthostat. at 2.76m high it is the largest stone on dartmoor, in a single stone row. the row measuring 118m long, consists of some 27 mainly small-sized stones and is orientated north to south. this substantial orthostat is at the lower southern end of the row and leads to a now mutilated cairn to the north. this large standing stone was re-erected in 1893 in its original socket hole. it is reminiscent of the bone stone at the end of one of the stone rows at drizzlecombe with its strikingly similar hammerhead profile. it lies in the danger zone below white tor and was mutilated by american troops during ww2 when it was used for target practice.