Uniquely formed remnants of ancient basalt volcanic crater sticking out from the sea.
Lóndrangar and the hill Svalthúfa are the remains of a crater, which has been eroded to its present form by the sea. The farmers in the area never made or make hay on the hill, because it is said to belong to the elves living in the area. Below the hill you may find Þúfubjarg cliff where according to a folktale the poet Kolbeinn Jöklaskáld had an encounter with the Devil.