underground rivers

Underground rivers are water bodies that flow beneath the Earth's surface through natural channels like caves or rock formations. They form when surface water seeps into the ground, gradually carving pathways in soluble rocks such as limestone. These subterranean streams can flow for miles, often emerging at springs or into larger underground chambers. They are vital to local ecosystems, providing habitats for unique species and contributing to groundwater supplies. Because they are hidden beneath the surface, they are difficult to detect but play an essential role in the planet's water cycle.