craiyon logo

A 3D diagram shows a tunnel boring machine in a cross-section, digging under a body of water, revealing its internal structure.

A 3D diagram shows a tunnel boring machine in a cross-section, digging under a body of water, revealing its internal structure.

tunnel boring machine digs tunnel below river level, machine below river bed, river from above, side view, diagram, light colors, 3D Mostra altro