Sulphur and other minerals at an active fumarole field by Lake Linow, a volcanic attraction south of Tomohon city, Lake Linow, Tomohon, North Sulawesi, Indonesia, Southeast Asia, Asia

Sulphur and other minerals at an active fumarole field by Lake Linow, a volcanic attraction south of Tomohon city, Lake Linow, Tomohon, North Sulawesi, Indonesia, Southeast Asia, Asia

Sol de Manana, a geothermal field in Sur Lipez Province in the Potosi Department, Bolivia, South America

View from Sulphur Mountain, Banff, Rocky Mountains, Alberta, Canada, North America

Sulphur fields in front of volcanic craters, glowing lava fountains, steam and shimmering air Fagradal Falls, Reykjanes, Grindavik, Iceland, Europe

Sulphur fields in front of volcanic craters, glowing lava fountains, steam and shimmering air Fagradal Falls, Reykjanes, Grindavik, Iceland, Europe

Boardwalk through the solfatara field Bumpass Hell, Lassen Volcanic National Park, California, USA, North America

Sulphur fields and lava fields in front of volcanic craters, glowing lava fountains, steam and shimmering air Fagradal Falls, Reykjanes, Grindavik, Iceland, Europe