Seltún Mud Pots

South

Seltún sits on a high-temperature geothermal field within the Krýsuvík volcanic system, where the ground hisses, gurgles, and stains the earth in yellows, reds, and whites from sulfur and mineral deposits. Mud pots heave and plop at the surface, fumaroles vent steam continuously, and the hot springs run above 80°C. Wooden boardwalks thread through the most active sections — the warning signs about fragile ground and scalding water are serious, not decorative. The boardwalk loop takes about 30 minutes, though most people linger. Lake Kleifarvatn, a dark, deep lake filling a volcanic fissure, is a short drive north and worth pairing with the visit. The Reykjanes Peninsula has seen heightened volcanic activity since 2020, and Seltún feels very much part of a living system. From central Reykjavík the drive is about 40 minutes via paved roads. Entry and parking are both free. Combine with Gunnuhver and the Reykjanes Lighthouse for a solid half-day peninsula loop. Cool or overcast days make the steam dramatically more visible.

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