10,000 km² · All Facts

10,000 km²
Bolivia's Salar de Uyuni — the world's largest salt flat, about 10,000 km² — can form a vast mirror when rainy-season water sheets across the crust.
SrcNASA Earth Observatory

Next evidence →85 metresCappadocia's Derinkuyu underground city descends about 85 metres through carved volcanic tuff, with stables, churches, cellars, and a missionary school; only about 10% is open to visitors.

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