Located on the frozen lagoon of the Svinafellsjokull glacier in Skaftafell, Iceland, the blue ice caves is a rare wonder to behold. Formed from centuries-old ice from the slopes of oraefajokull that has transformed into highly pressurized glacier ice containing hardly any air bubbles, Streams of melt water from glacier ice pour enter the glacier through its crevices, creating bigger and bigger holes through the ice, and thus the ice tunnels or ice caves are formed. Sediments eroded by the streams remain in the muddy cave floor while the top of the cave is a genuine crystalline blue, an amazing sight to behold.