Boiling mud pools at Hverarönd (Hverir) near Námafjall mount, Mývatn, Iceland
Tag «volcano»
Hot spring at Chae Son (Jae Sawn) National Park, Lampang, Thailand
Lava lake in the Erta Ale volcano, Danakil depression, Ethiopia
Grand Prismatic Spring in Yellowstone National Park, Midway Geyser Basin, Wyoming, USA
Highlands in Iceland between Thórsmörk and Landmannalaugar
