Grjótagjá used to be a very popular hot spring site until the mid 1970’s. After two eruptions in the 70’s and 80’s the water temperature rose too high for bathing. It is now on private land and the current owners forbid bathing but still allow visitors to come see and photograph the beautiful lava cave. 

It was recently used in the popular TV series Game of Thrones. It is the famous scene where Ygritte turns Jon Snow into a man. If you’re a fan of the show you will know what I am talking about. 

Grjótagjá – Iceland