Ljótipollur

Background

History & Background

Ljótipollur is an impressive explosion crater, a testament to Iceland's powerful volcanic history. It was formed by a phreatomagmatic eruption, where rising magma interacted violently with groundwater or surface water, leading to a massive explosion that created the crater. This dramatic geological event left behind the large, circular depression that now holds the unique greenish waters of the crater lake. As part of the active volcanic system that characterizes Iceland, Ljótipollur stands as a vivid example of the island's ongoing geological evolution. Iceland is one of the most geologically dynamic regions on Earth, experiencing a major volcanic eruption approximately every 4-5 years. Ljótipollur’s formation is a chapter in this continuous saga of creation and destruction, showcasing the immense forces that have sculpted the Icelandic landscape over millennia.

Ljótipollur is a volcanic crater in the Fjallabak Nature Reserve. Its lake sits inside a steep rim of red, brown and dark volcanic material, with patches of moss and low vegetation adding further colour. The area is reached by seasonal highland roads and conditions can change quickly, so travellers should check road and weather information and use a suitable vehicle.