Take out life insurance before visiting. The A4 is treacherous at the best of times, the track towards the dolmen can be sodden with deep puddles (even during the height of summer as my visit was) and if they don’t get you the miserable farm workers will. Okay, I had crossed a field of crops, albeit down the tramlines.
My overall sense of the dolmen was one of power. It looks as if it could crash down on the visitor; its size and bulk left me in awe of those who constructed the barrow that once stood there.