Visited 30.6.10.
I had no problem at all finding this site – for a change!
Opposite the entrance to Llethr Farm is a metal field gate. From here the Burial Chamber is easily seen in the boundry wall two fields away. To get a closer look all you need to do is go over the metal gate and then over the other gate on the opposite side of the field. Warning – the field would be very boggy when wet. I counted 7 large stones making up the collapsed chamber.