In this photo from Thursday, May 24, 2012, a construction vehicle moves sand near the parking lot at Ocean Beach is shown in San Francisco. In San Francisco, officials are mulling a significant ... more 
In this photo from Thursday, May 24, 2012, a construction vehicle moves sand near the parking lot at Ocean Beach is shown in San Francisco. In San Francisco, officials are mulling a significant retreat on its western flank, where the Great Highway is under assault from the Pacific Ocean. Right now, a beach parking lot that abuts the highway is crumbing into the sea just across the highway from the San Francisco Zoo. (AP Photo/Jeff Chiu) less 
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Associated Press | Photo By Jeff Chiu
Sat, Jun 2, 2012 6:00 PM EDT