According to Nicholas Thomas (A guide to Prehistoric Britain) Fairy's Toot measured 150 x 76 ft with a max. height of 40 ft in the 18th C. He explains it thus "it covered an elaborate tomb consisting of a passage, perhaps entered through a port-hole, with at least three pairs of side chambers". And according to Jacquetta Hawkes book, its "ruin" was described in the Gentlemans Magazine in the late 18th c, apparently it was road builders. The magazine lamented the loss of the skeletons found in the "catacombs". Woe betide a longbarrow if it happens to find itself by a road about to be constructed....