🇻🇳Vietnam
Hang En Cave
Hang En Cave, located in Vietnam's Quang Binh Province, is the world's third-largest cave, measuring 200m high, 150m wide, and stretching over 1.6 km. It is part of the Phong Nha-Ke Bang National Park, notable for its vast size and its role as a nesting site for swifts.
More about Hang En Cave
Discovered by local tribes in 1994, Hang En Cave features a large underground river and sandy beaches. The cave's main chamber is accessible via a guided 10 km trek through the park. It serves as a habitat for diverse wildlife and requires visitors to have a permit due to its protected status. Tours are generally available from November to September, avoiding the flooding season.