knoll (nôl) A small rounded hill or mound; a hillock.
[Middle English knol, from Old English cnoll.]
"In 1974 three members of a Worthing based paranormal research group visited the site and one member of the team was said to have levitated whilst walking amongst the trees which crown the hill. According to the story, he remained suspended in mid air for several seconds and during that time he was crying out 'No More! No More!' and was obviously in some considerable pain. He was then, apparently, thrown to the floor injuring his back" (wiki)
(yeah right!)