Is there water in all the big caves?

According to today's headline data, the main reason why there is water in the big hole is the function of groundwater. Some types of permeability of rocks are high and water cannot accumulate in it. In other cases, due to the influence of geological structure, the water in the cave cannot be effectively accumulated. So not all big caves have water.

There are many cracks, holes and caves in the rocks in caves, and these spaces can often accumulate groundwater. When natural factors such as rainfall or snowmelt make water seep into the ground, the groundwater in these caves will gradually accumulate, forming underground rivers, lakes and other water bodies.