Marble Caves at General Carrera Lake, Patagonia, Chile
Cistern (Cisternerne) underneath the streets of old Frederiksberg, Copenhagen, Denmark
Famous Waitomo glowworm cave, Waikato, New Zealand
Scuba diver in Taj Mahal Cenote (Tajma-hál) underwater cave, Yucatán Peninsula, Mexico
Trees and sky seen through cave at sunset, Red Rock State Park, Sedona, Arizona, USA
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