Lagarfljót Worm

The serpentine creature is said to live in Lagarfljót, a freshwater, below-sea-level, glacial-fed lake which has very poor visibility as a result of siltation.

It is described as longer than a bus, or 40 feet (12 m), and has also been reported outside the water, lying coiled up or slithering into the trees. It is a “many humps” type of lake monster, rather than the simply serpentine type of, for example, the Loch Ness Monster.

The Lagarfljót Worm has been sighted several times in modern times, including in 1963 by the head of the Icelandic National Forest Service,

A sightseeing boat named Lagarfljótsormurinn, beginning operations on the lake in 1999.