ASP-??? The Wiltshire Wisp-Worm:

The Wiltshire Wisp-Worm is an entity known to have been at Avebury in Wiltshire, England. Beginning as a brightly glowing sphere of light hovering at a height of roughly 10ft above the ground, this sphere is approximately 2 feet in diameter. It dances around neolithic stones as if under some kind of intelligent control, without ever hitting one of the standing stones. This sphere can make the entire area was suddenly lit up like an extremely powerful camera flash. After which the sphere of light will disappear and be replaced with another entity. The way it looks is in resemblance to a huge worm. It has a pale and slimy body approximately 6 feet in length and 1 foot in thickness. It has pair of large eyes and can slither across the ground. This leaves a trail of unidentifiable slime.