I revisited this in March 2008, and it was not so overgrown as it had been in June 2005, but it was still impossible to tell how long the allée couverte was, with the eastern end all covered in very thick brambles and other bushes.
The more open western end has one or two capstones still sitting on top of their supports, with the two side walls of the allée being about 1.5 metres apart.
Something is not right. This message is just to keep things from messing up down the road