How are the stone pillars in Nielongdong Cave formed?

Long-term precipitation of calcium carbonate. According to the industry encyclopedia, the stone pillars of Nie Longdong are all formed by long-term precipitation of calcium carbonate, hanging from top to bottom to form stalactites. Nie Longdong is located in Qingxi Village, futian town, Shangli County, Pingxiang City, Jiangxi Province. Located in Yang Qi Scenic Area, 3 19 National Road can be directly reached, and it is 3 kilometers away from Pingxiang city center 13. It is a natural landscape dominated by natural caves, which was formed 654.38+0.8 billion years ago.