How are underground streams formed?

Underground streams are formed primarily through the process of groundwater infiltration, where rainwater and surface water seep into the soil and rock layers. As this water moves through the soil, it dissolves minerals, creating channels and cavities in porous rock, such as limestone. Over time, these channels can expand and connect, forming a network of underground streams. Additionally, geological processes like erosion and tectonic activity can contribute to the shaping and development of these subterranean waterways.