Karst caves, and it is the majority of caves; formed by acidic ground-water dissolving the limestone.
Caves are made by water and wind carving into the Earth's crust.
Air! They are voids IN limestone formed by dissolution by water.
No, not all caves are made of limestone. Caves can be formed in various types of rocks, including granite, sandstone, and volcanic lava flows. Limestone caves are common because limestone is soluble and can be eroded by water to create cave systems, but caves can also form in other types of rocks through different geological processes.
Most caves are made out of limestone, which is a sedimentary rock composed of calcium carbonate. This rock is easily dissolved by acidic water, leading to the formation of caves through a process called chemical weathering and erosion. Other types of caves can also form in volcanic or igneous rock, such as lava tubes.
"Where" or "were"? Either way... they aren't or weren't made in caves.
Spelunking
caves are made of rock
No, they are natural sea-caves and arches.
Caves are typically formed in rock formations such as limestone, marble, or volcanic rock. The creation of caves is primarily influenced by water erosion, chemical weathering, and geological processes over millions of years. Inside caves, various mineral deposits and formations such as stalactites and stalagmites can be found.
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.