Tham Tet Toong Grotto
The Tham Tet Toong Grotto is located in Chieng An Commune, 2km from the Son La Town. This grotto is a wonder of nature. The cave is more than 150m long.
Above the cave are mountains and vast forests. Along the walls of the cave, there are numerous stalactites and stalagmites that sparkle in the morning sunshine. Flowing inside is a stream with white waterfalls.