"Hverir solfatara field, Reykjahilid, Myvatn, North Iceland, Iceland, Europe"

Aerial view of the tuffring crater Hverfjall in the evening light in the Krafla volcano system in the Mývatn region rising out of a green plain, in the background the lake Mývatn, Skútustaðir, Norðurland eystra, Iceland, Europe

Aerial view of the tuffring crater Hverfjall in the evening light in the Krafla volcano system in the Mývatn region rising out of a green plain, in the background the lake Mývatn, Skútustaðir, Norðurland eystra, Iceland, Europe

Caldera of Askja Volcano with the crater lake of Víti at the front and the crater lake of Oeskjuvatn at the rear, Highlands, Iceland, Europe

"Volcanism, crater, round blue lake, Lake Viti, crater lake, Krafla, Lake Myvatn region, Myvatn, Iceland, Scandinavia, Northern Europe, Europe"