👉 Underground fluids, primarily composed of water but also including various dissolved minerals and gases, flow through porous and fractured rock formations deep beneath the Earth's surface. These fluids play a crucial role in geological processes, such as shaping landscapes through erosion and sediment transport, and they are integral to the Earth's hydrological cycle. They can be found in aquifers, which are underground layers of permeable rock or sediment that store and transmit water, making them vital for human consumption, agriculture, and industrial use. Additionally, underground fluids can influence seismic activity and are a subject of interest in geothermal energy exploration due to their potential for heat extraction.