They were unaware they were standing in a railroad tunnel. Charles chases Bugs into a railroad tunnel. Mission Santa Cruz has a hidden single track gated railroad tunnel running under it. They quickly advanced inland to seize the Chiunzi Pass and a vital railroad tunnel. The only German killed in the railroad tunnel that afternoon was young Willi Felten. The railroad tunnel is high, wide, and long. This was the first railroad tunnel ever constructed under a river. The tunnel predates the South Pennsylvania Railroad tunnel construction to the south by eight years. They ride into a railroad tunnel and encounter a train, but emerge riding unicycles. Underneath the town is "Ridgetop Tunnel", a railroad tunnel bored in the early 1900s. The first railroad tunnel was built in 1888 by the Qing Dynasty in Taiwan. The Moffat is the fourth longest railroad tunnel in North America, as of 1989. It is a railroad tunnel, still in use, started in 1851 and completed in 1875.