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King of Caves Complete | IS-1020

Lava Tube Exploration in Raufarholshellir - Iceland's 4th Largest lava tube cave


More than just scratching the surface during your Icelandic experience, this cave adventure is surely off the beaten path


  • Iceland's 4th largest lava tube cave
  • Lava formations
  • Icelandic lava field

In the winter time a lot of ice forms in the forward section of the cave and almost every stone is coated with a thin crust of ice, which makes it hazardous to walk around the cave.

  • Small group
  • Expert guides
Availability All Year
Duration 1 / 3 hours
Departs From Reykjavik
Difficulty Moderate
Minimum age 12 years
Meet on Location Yes
Pick Up Yes


Per Adult
    • No Booking Fees
    • Fast & secure booking payment
    • Best Price Guarantee

What's Included


  • Pick up & drop off in Reykjavik
  • Guided caving tour
  • Flash light
  • Gloves
  • Helmet

What to bring

  • Warm clothes
  • Gloves
  • Headwear
  • Sturdy shoes
  • Waterproof outer layers

Not Included

  • Meals (we recommend bringing packed lunch)

Contact us for more Information about this tour



ice formations inside Raufarholshellir lava cave

Raufarholshellir lava tube cave is one of the better known lava caves in Iceland and it is easily accessible. The length of the tube is estimated to be 1360 metres. There are four entrances, all in easy reach of each other. The cave is partially collapsed and is difficult to trek, except for the innermost part which is easier because little has broken from the ceiling.

During the winter time a lot of ice forms in the forward section of the cave and almost every stone is coated with a thin crust of ice, which makes it hazardous to walk around the cave.

In the backward section, the cave forks into 3 tunnels, the lava flow from those tunnels probably joined in the Raufarholshellir cave 5000 years ago. Lava falls and other spectacular lava formations can be seen deep in those tunnels.

There are large chambers in Raufarholshellir lava tube, the largest chamber in Iceland, excluding those in Surtshellir and Vidgelmir lava tubes in Hallmundarhraun lava fields in western part of Iceland. The walk around the cave is an exciting journey and there are many things to see.

There’s a road leading to the cave’s entrance and it’s accessible all year round. It takes about an hour to reach the cave from Reykjavik in a car, and the trek through the cave itself takes about four hours. So it is probably best to plan 5-6 hours for the whole tour.

Lava tubes are natural conduits through which lava travels beneath the surface of a lava flow, expelled by a volcano during an eruption. They can be actively draining lava from a source, or can be extinct, meaning the lava flow has ceased and the rock has cooled and left a long, cave-like channel.

Lava tubes are formed when an active low-viscosity lava flow develops a continuous and hard crust, which thickens and forms a roof above the still-flowing lava stream. Tubes form in one of two ways: by the crusting over of lava channels, and from flows where the lava is moving under the surface.

For those do not select the pickup option in the booking engine: The tunnel is located less than 30 minutes drive (approximately 30 km) from Reykjavík, Iceland and accessible by all vehicles. Driving from Reykjavík east on Route 1 and drive for about 18 km. Turn right onto Route 39 (Þorlákshöfn) and drive for another 12 km. The parking area will be on your left hand side. Click here for a Google Map. The GPS coordinates are: N.63º 56.407 / W. 021º 23.742


Still got questions about the tour? Hopefully you will find the answer here.

Yes, we will provide you with a headlight and a helmet.

The Icelandic weather is very unpredictable therefore we highly recommend to dress in layers. Warm layers closest to you preferably wool/thermal underwear, pants sweater and on top waterproof outdoor clothing. It is also suitable to wear good hiking shoes and gloves. Jeans have proven to be a bad choice.