Alien-Looking Landscapes You Can Actually Visit on Earth

12. The Marbled Waters of General Carrera Lake, Chile

General Carrera Lake, straddling the border between Chile and Argentina, is home to the stunning Marble Caves. Over thousands of years, water has sculpted the calcium carbonate rock into breathtaking, swirling tunnels that reflect shades of blue and turquoise from the lake’s crystalline waters. Kayaking through these luminous marble corridors is like gliding through a liquid gemstone on an alien sea.