Volcanoes are grouped into four types: cinder cones, composite volcanoes, shield volcanoes and lava volcanoes. Skip to main content. You have permission to edit this ...

Fiery volcanoes have belched up molten rock, hot ash, and gas since Earth formed billions of years ago. Get more information about volcanoes from National Geographic. Volcanoes—everything to ...

Footage from March 8 showed ash and steam billowing from the opening as the climbers stood a safe distance away. Freeze frame of Klyuchevskoy volcano video captured on March 8. (Boris Smirnov via ...