Lóndrangar are a pair of striking basalt sea stacks rising from a platform of flat lava on the south coast of Snæfellsnes, west of the Hellnar area. The two dark pinnacles — one 61 metres, one 52 metres — are the most dramatic coastal formations on the peninsula, rising sharply from the wave-cut platform with vertical walls that drop directly to the sea. Puffins, fulmars, and ravens nest on the ledges.
A short path from the car park leads to viewpoints above the platform. The surrounding lava field is partly covered in moorland vegetation and the walk to the cliff edge passes through a landscape of craters and old eruption features. The Vatnshellir lava tube cave nearby is open for guided tours — a spiral staircase descends into a 8,000-year-old lava tunnel beneath the surface. The combination of Lóndrangar sea stacks, the lava tube, and the cliff path toward Hellnar makes the south coast west of Arnarstapi one of the richest sections of the Snæfellsnes circuit.