Raufarholshellir is a cave system located in southern Iceland, part of the Ölfus municipality near the town of Hveragerði. This lava tunnel, formed by flowing magma centuries ago, stretches approximately 1,360 meters underground. Visitors explore the cave's icy passages and dramatic rock formations, walking through the natural tunnel to witness Iceland's volcanic geology firsthand.
Raufarholshellir is a lava tunnel located on the Reykjanes Peninsula in southwestern Iceland, approximately 30 kilometres southeast of Reykjavik along Route 39. Formed roughly 5,200 years ago during a volcanic eruption, the tunnel extends nearly 1,400 metres and is one of the longest and most accessible lava tubes in Iceland. The site sits within a broader zone of active and recent volcanism on the peninsula, offering significant geological and educational value as well as a compelling visitor experience for travellers exploring the greater Reykjavik region.
