Visited 14.4.10.
Easily seen from the B3280. Park at the field gate and access is a straight 2 minute walk through 2 field gates / 2 fields. The site consists of a large mound of stones. There is no public right of way to the field in which the cairn stands so you need to either seek permission or do what I did - make a dash for it!
After many years of visting sites in West Penwith, we decided to stray further east. Visited in June 2006, on what must have been the most disappointing walk I have ever had in Cornwall. Unlike West Penwith, where footpaths are generally clear and sites accessible, further east the land owners are obviously not so amenable. Walking from Troon, over Bolenowe Carn Moor, this was the first site on the list to visit. We found the spot and could see tantalising views of the top of the enormous stone mound that is Hangman's Barrow. Unfortunately, a way in to the site was not apparent, so I could only take a picture over the hedge. This should have been a warning to turn around, as later in the day we got stuck in vegetation, failed to get to see Nine Maidens due to a new fence across the footpath, failed to find the settlement at Calvadnack and got stuck in more disappearing footpaths near Menherion Farm! Clearly not a success. I would be interested to know if there is a route into this site, as it is clearly impressive - rather like Ballowall in terms of scale.
Mentioned by Craig Weatherhill, in “Cornovia: Ancient Sites of Cornwall & Scilly” (Cornwall Books - 1985, revised 1997 & 2000) – “This massive cairn occupies a prominent ridge-top position. Built entirely of stone, it is 33.0m high and 20m in diameter. Its center is mutilated and cratered due to past tomb-rifling and stone-robbing. Nothing is known of the cairn’s contents.”