Engineering Below the Surface: Prefabricated Tunnels for Parcel Movement Inside The Tunnel Tunneling is one of the most fascinating and crucial aspects of civil engineering. Whether carved through mountains, buried beneath cities, or placed below bustling railway stations, tunnels silently support seamless infrastructure systems. Recently, I had the opportunity to observe a unique application of tunneling in a railway redevelopment project: a prefabricated tunnel system constructed for the efficient movement of parcels across the station. Beyond its function, the real innovation lies in the method of construction , design detailing, and layer-wise protection systems — a model of modular and rapid infrastructure development. The Need for Underground Parcel Systems Modern railway stations are transforming into integrated transit and logistics hubs. With rising freight volumes, it's essential to separate pedestrian zones from logistics pathways . An unde...