Can I swim in the water inside the cave?

You can dip your foot in, but it's very hot, so be careful not to stay in for too long.

Is it safe to bathe in Grjotagja Cave?

Due to high temperatures, it's no longer safe to bathe here, so just enjoy the view.

Grjotagja Cave, Mývatn

Also known as: Grjótagjá. Grjotagja Cave, located near Mývatn, intrigues visitors with its geothermal hot springs nestled within a lava cave. Once a popular bathing spot, the cave's allure lies in its crystal-clear waters and the play of light on the cave walls. Vloggers often emphasize the cave's connection to Icelandic folklore and its appearance in popular media, adding a layer of mystique. WanderVlogs captures the essence of this attraction, offering insights into its geological formation and tips on exploring the surrounding volcanic landscapes, making it a fascinating stop for those interested in Iceland's natural wonders.

Last updated: Jan 13, 2026

Latest Adventures at Grjotagja Cave

"Grjotagja Cave is a mystical spot with an underground thermal spring that once attracted locals."
— Lifeder • Sep 25, 2024
"You're literally going inside of the cave where famously Ygritte and Jon Snow made love!"
— Travel With Val • Dec 20, 2023