This silly hand drawn diagram shows the basic formation of the structure as found mostly buried on top of this hill. Another formation interesting to the anthropologist is the area labels "echo spot" where a good stomp of a foot will create a pretty decent echo, as if there is a hollow spot beneath. Roughly, the echo area is 10 * 10 meters in size. On a recent visit, a friend and I dug and found a flat stone 'floor'. The frozen ground was too difficult to dig, so I'll have to be patient until spring.
This last picture is of the dolmen. It stands on three cut stones. One of the stones is tipped, but it still stands very sturdily.