Chom Ong Cave

Chom Ong Cave System 45 km northwest of Oudomxay town near the village of Ban Chom Ong. The system stretches along a 4 km long mountain ridge and has a parallel running and interconnecting fossil and river passage. It was explored in three explorations (2009, 2010 and 2011) to a length of about 18.4 km with some small, unpromising side passages remaining.

The cave is not only one of the longest caves in South East Asia but also by opinion of the cave exploration team one of the most beautiful and interesting caves. With its two very different passages it has a diversity that is very rare. . It impresses with several huge stalacmite and stalactite formations as well as vast glittering parts, sinther basins but also geologically interesting parts (shields, floe calcite etc.). It is said that Chom Ong cave is the most beautiful and diversified cave in Lao PDR.