Hang Son Doong in Vietnam, part of the Phong Nha-Ke Bang National Park, holds the title of the world’s largest cave by volume.
Veryovkina Cave, another jewel in the crown of Abkhazia’s Arabika Massif, has been explored to 2,212 meters (7,257 feet), making it one of the world’s deepest caves
Lamprechtsofen, located in the Leogang Mountains of Austria, is one of the longest and deepest cave systems in the world, with explored sections reaching depths of 1,632 meters
Sistema Huautla, nestled in the rugged Sierra Mazateca of Oaxaca, Mexico, is a huge challenge for speleologists and adventurers, boasting over 90 kilometers of mapped passages
The Mulu Caves, located within Gunung Mulu National Park in Malaysian Borneo, represent one of the most spectacular cave systems in the world.
Eisriesenwelt, located in the heart of the Austrian Alps near Werfen, is the world’s largest ice cave, extending over 42 kilometers.
Lechuguilla Cave, located in Carlsbad Caverns National Park, New Mexico, is one of the most significant subterranean finds of the 20th century
Gouffre Berger, in the Vercors Massif of France, was the first cave in the world to be explored to a depth of more than 1,000 meters, making it a historic site in the world of speleology.