Formed during an eruption 9.000 years ago, Gjábakkahellir lava tube cave in Þingvellir has a unique feature. It’s open on both ends so visitors are able to walk directly through it. Inside are incredible rock formations in various colors, and stalactites of all shapes and sizes.
Gjábakkahellir cave is a 360 metre (1.181 ft) long lava tube located in Þingvellir National Park. It was discovered in 1907 when workers were preparing a road between Þingvellir and Geysir for the King of Denmark, who at that time ruled Iceland as a colony. Since then, more than a dozen of caves have been discovered in the area. One of those appears just as a hole into the ground within a 20 metre(66 ft) distance from Gjabakkahellir.
Can you go spelunking in Gjábakkahellir cave?
Gjábakkahellir is easily accessible. There is only a 50 metre(164 ft.) walk from the road to the opening of the cave. Once inside, you can see all the typical features of a lava tube. Most impressive are the lava falls and “shark tooth” stalactites.
The cave floor is covered with large rocks that have fallen from the cave ceiling during the cooling phase of lava field. Keep in mind that in some places you will need to use both hands and feet to navigate through the rough terrain.
Where to find Gjábakkahellir cave?
Gjábakkahellir is in Þingvellir National Park, but it is actually situated in the heath between Þingvellir and Laugarvatn Lake. On Google Maps it is called “Blueberry Cave”.
Is a guide needed to explore Gjábakkahellir cave?
No, though we strongly recommend having one. The footing can be treacherous at times. If you decide to explore the cave on your own, please wear good shoes, bring lights and wear a helmet.
