Visit the Danakil Depression

Otherworldly landscape of limestone chimneys.

Young fissure volcano between spreading tectonic rifts.

Wind-carved kalut ridges in one of the hottest places ever measured on Earth.

Wind-carved chalk mushrooms and icebergs of rock glowing at sunset — camp overnight under the Sahara stars.

Drift between the American and Eurasian tectonic plates in gin-clear glacial water.

Climb the vast flat-topped tepui.

Sheer desert escarpment near Riyadh.

High-altitude geyser field steaming at dawn, 4,300 m up in the Andes.