Sepulveda Tunnel (Los Angeles, California)

USA / California / Los Angeles / Los Angeles, California
 tunnel, invisible
This tunnel doesn't get too much traffic on weekends.
The interior is lined with very smooth concrete and the shape of the tunnel is a perfect semi-circle.
If you're peddling your bicycle down the center line, halfway through the tunnel (watch out for traffic!) and let out a scream, you'll experience the most amazing echo-chamber effect.
Nearby cities:
Coordinates:   34°7'46"N   118°28'49"W
This article was last modified 13 years ago