Weather :

Timings : 8 AM to 5 PM

Time Required : 6 to 7 hours

Entry Fee : 10,000 LAK or 1.7 USD per person. 40,000 LAK for a guide.

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Chom Ong Caves, Udomxai Overview

Chom Ong is a natural cave located close to the city of Oudomxay in Oudomxay province in northern Laos. Spreading for over 16km, it is the second-longest cave in Laos and the 9th longest in South East Asia. Best explored with a guide, it is one of the worth-visiting attractions for tourists traveling in northern Laos.

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Chom Ong Caves History & Significance

The caves were first discovered by explorers in 2009, although the villagers had been knowing about it for a long time. Called Tam Chia or Bat cave by the locals, they used this to hunt for bat and also the faeces which are used as fertilizers. During the first exploration, a 4.5km-long cave was located amidst mountain ridges. Two other discoveries happened in 2011, which revealed the rest of the caves, its massive formations and path amidst Nam Kaang river.

The caves consist of two passages, one consisting of the river and the other including fossils. Its unique ecosystem has created a base for many kinds of plants and also a home for bats, which are found in hundreds of thousands.

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