A geographical feature formed by the erosion of softer rock is called a cave or a limestone cave in particular. It occurs through a process known as chemical weathering, where slightly acidic rainwater seeps into the ground and interacts with soluble rocks, such as limestone, creating cavities over time. This erosion leads to the formation of intricate underground systems characterized by stunning stalactites and stalagmites, formed from mineral deposits. Caves can also serve as important ecological habitats for various organisms and are often significant to human history and culture, providing ancient humans with shelter and inspiring myths and legends throughout the ages.