LOADING

Clip

Modern Marvels | Holland Tunnel

The first underwater tunnel for cars had to solve a seemingly impossible, life-or-death challenge: build a tunnel with enough ventilation to prevent it from becoming a deadly gas chamber.
Airing: 7/24/2018 | 0:05:17
©2018 WNET All Rights Reserved.   825 Eighth Avenue, New York, NY 10019