A growing lava dome and dark flow channels are visible inside Shivelyuch volcano's caldera in this detailed Landsat 9 image captured on April 23, 2026. (Image credit: NASA Earth Observatory / Lauren Dauphin)

Fresh satellite images have captured one of Russia's most active volcanoes melting snow from the inside out as volcanic heat continues to seep through the frozen landscape of the Kamchatka Peninsula.

Shivelyuch (also spelled Shiveluch) is the northernmost active volcano on Kamchatka and one of the most active volcanoes on Earth , according to NASA Earth Observatory .…