This is a beautifully bleak place. Its well worth the money to the NT to just have a wander round the ruins, and get the amazing views from the top. Prehistory wise there isn’t that much to see except the mound itself and at least 5 barrows within view from the top.
The whole area does oooze of the ‘mother spirit’ however and its not hard to imagine this hill being revered, standing solitary as it does between the two huge banks, that seperate Purbeck from the world.