The grey-brown waters of the river-lake Lagarfljót are reputed to harbour a fearsome monster, Lagarfljótsormur, which has allegedly been spotted since Viking times. The most recent ‘sighting’ of the serpentine beast (also called the Worm/Wyrm) caused quite a stir – in 2012 a local farmer released footage of a large creature moving in the river. The clip has attracted more than five million hits on YouTube, and garnered international news coverage. Read more at www.lagarfljotsormur.com.
Real or imagined, the poor beast must be pretty chilly – Lagarfljót starts its journey in the Vatnajökull ice cap and its glacial waters flow north to the Arctic Ocean, widening into a 38km-long, 50m-deep lake, often called Lögurinn, south of Egilsstaðir. Whether you see a monster or not, it's a lovely stretch of water to circumnavigate by car.