Artist Heizer's big rock rolling toward LA museum

March 10, 2012 6:08:11 AM PST
The 340-ton boulder that has been lumbering across Southern California for the past week and a half is scheduled to arrive at the Los Angeles County Museum of Art before dawn Saturday, cheered on by what has become an audience of tens of thousands. There it will become the centerpiece of acclaimed earth artist Michael Heizer's latest creation, "Levitated Mass."