The Tunnel

A tunnel is an underground or underwater passageway carved through a solid material like rock or soil to connect two points, often for transportation, utilities, or infrastructure. Constructed using methods like drilling, blasting, or tunnel boring machines, tunnels help bypass natural obstacles, reduce travel time, and improve connectivity. They are designed to withstand external pressures and environmental conditions, ensuring safety and durability. Used worldwide for roads, railways, subways, and water or utility pipelines, tunnels are vital engineering structures that facilitate efficient movement and access in dense or challenging terrains.