Located just about 30 minutes from Reykjavík is Iceland’s famed LavaTunnel, known as Raufarhólshellir. This tunnel is a result of the Leitahraun eruption, which occurred east of the Bláfjöll Mountains about 5,200 years ago. Although visitors won’t walk through its entirety, the tube stretches an impressive 4500 ft (1360 m), with the main tunnel (comprising three sections) covering about 3,000 feet (900 m).

Embarking on a tour through the lava tunnel is a fantastic way to gain a deeper understanding of the inner workings of a volcanic eruption. Lava tunnels (or tubes) form after volcanic eruptions as the lava on the surface begins to cool, creating a hard crust that gradually thickens as more lava moves underneath. Once the lava fully drains, the top and crust remain while the inside hollows out.

The tunnel is illuminated by impressive lighting, and visitors will enjoy an easy walk over several footbridges built over the rough terrain, making the tour accessible to most people. For those planning to visit Iceland in the winter, they can witness unique and beautiful ice formations inside the tunnel.

For more adventurous souls, there are plenty of other unique volcanic activities to explore in Iceland. So, make sure to check out the top volcano experiences in Iceland and add them to your travel itinerary.

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