railroad tunnel
Mountain train bore
A railroad tunnel is a passage bored through a mountain, hill, or other obstruction to allow train tracks to pass through rather than over or around.
Major railroad tunnels were engineering marvels of the 19th and 20th centuries: The train emerged from the railroad tunnel into bright daylight.
The term distinguishes from tunnels built for roads, subways, or pedestrians.
- undergroundBelow ground or countercultural
- train trackRail corridor for locomotives
- locomotiveRailway pulling machine
- steam engineThermal vapor motor
- iron horseSlang for steam engine
tracks · narrow gauge · darkness · pitch black · bore · mountain · mountain pass · rock face · passage · excavation · mine shaft · steam · echo · portal · dynamite · blast zone · engineering · blasting
railroad tunnelrailroad bridge
Elevated track over obstacle
railway viaduct · elevated railway · railway overpass · trestle · overpass
railroad, tunnel, rail, road, rails, roads, railed, railing, railings