Hverir

Hverir is a highly active geothermal area located in the Mývatn region of northeast Iceland. It sits right beside the volcanic Krafla fissure zone, just off the Ring Road. The stark, alien landscape is one of the most popular geological stops in the northern part of the country.

The overwhelming smell of rotten eggs at Hverir is caused by hydrogen sulfide gas (H2S) escaping from the earth. The area is packed with steaming fumaroles and highly acidic mudpots that constantly vent these sulfurous compounds into the air. The pungent odor is a defining characteristic of Iceland's intense geothermal zones.

Hverir is famous for its violently bubbling grey mudpots, towering steam vents (fumaroles), and vast stretches of barren, mineral-stained earth. The constant release of steam creates a sulfuric crust over the ground, which miners historically collected for sulfur extraction. The vibrant orange and yellow deposits contrast sharply with the white steam and dark volcanic soil.

Yes, the mudpots at Hverir are boiling at dangerously high temperatures, typically well over 200 degrees Fahrenheit. The superheated groundwater circulates close to the magma chamber beneath the Krafla volcanic system. Visitors are strictly confined to wooden walkways, as stepping off the path can result in severe, fatal burns through the fragile, scalding crust.