Aerial view of Golden Gate Bridge, the approach freeway through the Presidio, the Toll Plaza and distant high hills of Marin County. The tides race through this one-mile opening between the ocean and San Francisco Bay at speeds about 10 miles per hour.

E.F. Clements, 1120 Mission, SF, Cal.
Natural Color by Mike Roberts
Number: C9232

via Flickr http://flic.kr/p/u4Mtn1