One-way Tunnel: My first encounter with a one-way tunnel. Stop lights control the direction. This is one case where running a red light would absolutely be fatal. On the way to the Nike Missle Museum, Marin Headlands, California.

Snapped on: Feb 6, 2005.

Nikon D100, Tamron 70-300/4.5-5.6 LD Macro ISO400