Best World Record

Veryovkina Cave is an Abkhazian karst system renowned for being the world’s deepest known cave. Located within a limestone formation, it achieved international recognition after comprehensive surveying revealed a depth of approximately 2,212 meters in 2018. The cave's significant depth makes it of i...

The Mammoth Cave System represents the world's largest known cave network spanning more than 400 miles through Kentucky’s limestone bedrock. Formed over millions of years by dissolving rock, it showcases exceptional karst topography and geological history. Primarily explored by speleologists, geolog...

The Sarawak Chamber resides within a complex karst system in Gunung Mulu National Park, Malaysia. This immense cave passage is recognized as the largest known underground chamber globally, measuring approximately 80 meters high and 237 meters wide. Its colossal scale makes it a significant geologica...

Dean’s Blue Hole is a remarkable limestone sinkhole located on Long Island in the Bahamas. It represents the world's deepest known underwater cavity, reaching approximately 202 meters (663 feet). The hole’s unique formation and extreme depth make it a significant geological feature and a globally re...

The Sótano de las Golondrinas is a remarkable limestone cave system located in San Luis Potosí, Mexico. This vertical shaft reaches an extraordinary depth of 333 meters making it one of the world’s deepest caves. It's notable for its unique geological formation within karst topography and most famou...

Deer Cave within Gunung Mulu National Park represents an exceptional karst formation in Malaysia. It’s notable for its immense size – one of the world's longest continuous cave passages – and supports a significant bat population exceeding three million individuals. The cave system is primarily lime...

World's largest accessible ice cave, located near Werfen, Salzburg, Austria, with over 40 km of passages; first scientifically explored in 1879 and opened to tourists in 1920.

An underwater cave network in Quintana Roo, Mexico, one of the world's longest flooded cave systems, with over 270 kilometers of surveyed passages.

Majlis Al Jinn in Oman is one of the world's largest underground chambers by floor area, accessible only by rope descent through ceiling openings and first documented in 1983.

The Xiaozhai Tiankeng in Chongqing, China, is the world's deepest sinkhole, measuring 662 meters deep and formed by the collapse of a massive subterranean river cave system.