An adventurous visit to the 9,000 year old, 364 m. long lava tube Gjábakkahellir. The cave is quite rocky and you will have to walk, crawl and climb. The tour finishes at the Fontana Geothermal Baths, where you can enjoy the sauna, the pool and a dip in the lake.
Good hiking boots and gloves are recommended.
Helmets and lights are included.

Note: This tour is not suitable for those with claustrophobia or limited mobility.