The Maasai Mountain of God, the only volcano on Earth erupting cold black carbonatite lava.
The Lighthouse of the Mediterranean has erupted every twenty minutes for two thousand years.
Not the highest mountain, but its summit is the furthest point from the centre of the Earth.
Sandboard down an active volcano.
Salt pans inside an extinct volcano on Sal, where the water is so dense you float as in the Dead Sea.
Young fissure volcano between spreading tectonic rifts.
Otherworldly landscape of limestone chimneys.
Neon sulphur pools, salt flats 125 m below sea level and the Erta Ale lava lake — the hottest inhabited place on Earth.
Bubbling grey cones on the Caspian steppe — half the world’s mud volcanoes are here.
Sail through a narrow gap into the flooded caldera of an active volcano, past a ruined whaling station and beaches warm enough to dig a hot bath.
Geysers, hot springs and Maori culture.
High-altitude geyser field steaming at dawn, 4,300 m up in the Andes.
Infobox
