Tham Kong Lo Cave, hidden deep in the Phu Hin Bun wilderness of central Laos, is one of Southeast Asia's geological wonders. The 7.5 kilometers of Nam Hinboun flows through the cave of Kong Lo. It is the longest and greatest cave in Laos measuring up to 80-90 meters in some places. Climb to the dark summit to see the top of the waterfall. It is a true cave explorer’s experience complete with darkness and small spaces. When light shines on the water, you will be amazed by how clear it is. Read more +