Trollkyrkja / The Troll’s church, named after the mountain’s peaks which resembles a gathering of trolls. The Troll’s church consists of three lime-caves with underground streams and beautiful waterfals. Near Molde, Møre og Romsdal, Norway.
This is an ice cave, known as "crystal Cave" on the frozen lagoon of the Svínafellsjökull glacier in Skaftafell, Iceland. This snow, which is up to 1000 years old has metamorphosed into highly pressurized glacier ice that contains almost no air bubbles.