Clifftop barrow excavated by William Copeland Borlase late 1870s. Description from Pastscape:
The barrow is in poor condition and consists of a mound of earth 0.7m high, and a mutilated circle of retaining stones. Three stones in the north west sector and set on edge and appear to be in situ but the remainder are recumbent. There is no trace of a cist within the barrow.
Much more here.