Vatnshellir Lava Cave

Vatnshellir

Snæfellsnes

Vatnshellir is an 8,000-year-old lava tube on the Snæfellsnes Peninsula, formed when lava from the Purkhólar crater family cooled on the surface while molten rock drained away below, leaving a hollow tube about 200 meters long. It descends 35 meters underground via a spiral staircase through three chambers; the 45-minute guided tour ends at the deepest point in near-total darkness. The cave holds just above freezing year-round — a warm layer is essential. Snæfellsjökull National Park requires approved guides for all visits; helmets and torches are provided. Tours run year-round, roughly hourly in summer and three times daily in winter. The cave is reached by a gravel road off the peninsula's main circuit. What to expect inside: this is a lava cave, so you get rough basalt surfaces, mineral color variations, and lava formations — not the dripping limestone formations of other cave systems. Book ahead in July and August when tours fill fast. The terrain is easy walking with staircase sections; most people with reasonable mobility handle it without trouble, though children must be able to walk independently.

Book & Explore

The links below are affiliate links. If you book through them we may earn a small commission at no extra cost to you — it helps keep this guide free. See our about page for how we keep recommendations independent.