There’s quite a lot still remaining. This is the backstone of the three-chambered gallery. The cairn itself, quite a bit of which remains, is over double the length of the gallery.
Face on at the entrance. This is one of the few court tombs that still has any of its roofstones in situ, even though this one has partially collapsed into the chamber just behind the entrance. (Paulie is keeping the hungry heifers at bay to the left in this shot).