Víðgelmir

Hallmundarhraun, the biggest lava area in Borgarfjörður, was formed in a giant eruption close to Langjökull glacier around the year 930. It covers over 242 km2 and it consists of some of Iceland's longest and largest lava caves. Fljótstunga is located in Hallmundarhraun and in the land of Fljótstunga is Víðgelmir.

Víðgelmir is more than 1.5 km long. The highest point inside the cave is 15.8 m and the 16.5 m in width. The cave's volume is 148.000 km3 making it, by far, the largest cave in Iceland. It has beautiful ice formations and deeper inside there are hundreds of stalactites and stalagmites. Viking age jewelery was found there in 1993.

Speleological expert, Björn Hróarsson, writes in his book Lava caves in Iceland that Víðgelmir is one of the most remarkable lava caves on earth.

The cave is closed and only to be visited with guide. At Fljótstunga we arrange guided tours.

Short tour: approx. 1 hour
Max: 15 people
Age limit: 8 years

Long tour: 3-4 hours
Max: 8 persons
Age limit: 13 years

The cave is partly rough and warm clothes, good walking boots and gloves are recommended. Helmets and flashlights are included in the tours.

Please be aware that Víðgelmir is a preserved cave and that no one is allowed to enter it without permission and guidance.