Chemical weathering - the rock is dissolved by rain-water acidified slightly by absorbed atmospheric carbon-dioxide.
Mammoth Cave is a limestone cave system, located in Kentucky, USA. It is a type of karst landscape, characterized by the dissolution of soluble rocks like limestone, resulting in unique underground formations and passageways.
A sinkhole is the term used to describe a depression in the ground caused by a cave collapse. It can also be the result of acidic water dissolving limestone.
chemical change
Solid limestone may change into a cave when it is dissolved by acidic rainwater or groundwater over long periods of time. The water dissolves the limestone, creating underground voids and passages that eventually form a cave system. Other factors like tectonic activity or volcanic activity can also contribute to cave formation in certain circumstances.
Caves formed from minerals dissolving and re-forming typically occur in limestone, where acidic groundwater dissolves the limestone rock to create voids. As the water carries the dissolved minerals, it can re-deposit them as stalactites, stalagmites, and other cave formations when conditions change. Over time, these processes shape the cave environment.
acidic groundwater
Limestone and limestone formations.
it is a 'karst' cave, i.e. formed by the action of water on limestone.
The ground-water is a solution of calcium carbonate it has dissolved from the limestone above the cave. The mineral is subsequently precipitated as deposits of calcite in the cave: stalatcties & stalagmites, and flowstone on the floor and walls.
From dissolution and erosion of limestone by acidic water over time.
Limestone doesn't exactly "help" a cave unless the stalagmite's and such are what you are looking for. Limestone is what creates those.
Limestone caves are sometimes called solution caves because they are formed through a process called solution weathering. This occurs when water containing carbon dioxide dissolves the limestone rock, creating cave systems over time. The dissolved limestone is carried away in the form of a solution, hence the term "solution cave."
Jieta Grotto is a limestone cave it is not man-made.
Level 45 in the lake cave is nothing but limestone.
Limestone.
Dissolving limestone.
Same way as any limestone cave: dissolution of the rock by weakly acidic water flwoing through fractures and other discontinuities.