Underground channels are natural or artificial pathways that allow water to flow beneath the Earth's surface. These channels can be formed by various processes, including erosion, where water gradually carves out tunnels in rock or soil. They play a crucial role in groundwater movement and can help manage water resources in different environments. In urban areas, underground channels may be constructed to control stormwater runoff and prevent flooding. These engineered systems often include drainage pipes and culverts that direct excess water away from streets and buildings. Properly designed underground channels can enhance water quality and protect ecosystems by filtering pollutants before they reach surface water bodies.