Introduction to Mongla Hot Spring: Mongla Hot Spring is 420 meters above sea level, with a normal water temperature of 54-30 degrees and an average annual flow rate of 0.5 cubic meters/second. It contains a variety of minerals and is a high-heat radon-fluoride water with a radon concentration of 21.7. The entire hot spring scenic area is spread out in the east, about 850 meters long and 500 meters wide. The hot springs are surrounded by layers of terraces and ancient trees.