Tham Khoun Xe

190512 km surveyedLaos

CountryLaos

RegionKhammouane

Discovered1905

Size/Depth12 km surveyed

About Tham Khoun Xe

One of the great river caves of Asia on the Xe Bang Fai river. The huge passage reaches 76 m wide in places. Local fishermen have used the cave for generations. A French expedition documented it in 1905. Kayaking through reveals enormous chambers and a waterfall inside.

Related Caves

Mammoth Cave

4,000 BC685 km surveyedUSA

The longest cave system in the world with 685 km of surveyed passages. Named a UNESCO World Heritage...

Sistema Sac Actun

Various386 km surveyedMexico

The second longest cave system in the world and the longest underwater cave. Located in the Yucatan ...

Son Doong Cave

19915 km longVietnam

The largest known cave passage in the world by volume. Contains its own weather system with clouds a...

Waitomo Glowworm Cave

Various250 m surveyedNew Zealand

Famous for its ceiling covered in thousands of glowworms that create a starry sky effect. The Arachn...