What is the amount of water in a river?
It's not an answerable question because it is specific to the cave's own hydrology and the weather: some caves are dry all year round apart from minor drips from joints in the roof, others can carry raging torrents or even fill to the roof in flood.
Still other caves, or at least passages within them, are permanently water-filled. Such passages are called "sumps" and with a very few exceptions can be negotiated only by properly-equipped, properly trained cave-divers who are also expereinced cavers anyway.
Karst caves, and it is the majority of caves; formed by acidic ground-water dissolving the limestone.
Other way round! Water and/or air are in caves.:-) Most of the world's caves have formed / are forming in limestone.
The acid in the water forms it
The most common types of cave are limestone caves.
the 1st thing caves are full of is water
Any amount. It can be like a gazillion
water caves
The name "Cango Caves" is believed to have originated from the Khoikhoi word "xamga," meaning water. This is likely in reference to the underground water sources found within the caves.
Literary all over the map you can usually find cave entrances above ground but there is a vast amount of caves underground.
Oh yes! Most caves in limestone (most caves in fact) are formed by water and very many still hold the streams that are in fact still developing them. Such caves are called "active". Some are completely full of water and explorable only by specialised cave-divers. Caves or cave passages that have lost their formative streams are called "fossil" or "abandoned", but even in these water drips in from the rock's joints through which it percolates.
Water can create caves through a process called erosion. Over time, water can dissolve and erode soft rock formations like limestone, creating openings and caverns underground. As water flows through cracks and fissures, it can widen them to form caves. Additionally, underground rivers can carve out caves as they flow through the rock layers.
Caves can also be created by underground water erosion, where water dissolves and carries away rock to form caves in limestone and other soluble bedrock. Additionally, caves can be formed through volcanic activity, such as lava caves formed from flowing lava, or glacier caves created by melting ice in glaciers.