The World's Greatest Geological Wonders: 36 Spectacular Sites
Erta Ale - Compact Fury of Lava Lakes
S1 E5:
Zoom in on a remarkable feature of the African Rift Valley: the lava lake at Erta Ale in Ethiopia. This seething cauldron of molten rock is the oldest of the world's five active lava lakes, and it replicates on a small scale the complex process of plate tectonics.