A flooded passage
The Bay Management Board describes Luồn Cave in the Bồ Hòn area as a flooded passage between open water and an enclosed lake. Unlike a dry cave, it is reached by watercraft such as a sampan or kayak under the site’s rules. Clearance can be low, so follow the guide’s instructions on seating and safe movement.
Respect the habitat
The inner lake is part of a natural landscape with wildlife. Do not call to attract monkeys, feed them, or leave food behind. Water levels, permitted craft, and operating rules may change; check current notices rather than relying on an old post or a photo online.