FILE - In this Monday, Oct. 20, 2008 file photo, restriction tape blocks an area at Curry Village in Yosemite National Park, Calif., after a boulder fell during a rock slide. Falling boulders are the ... more 
FILE - In this Monday, Oct. 20, 2008 file photo, restriction tape blocks an area at Curry Village in Yosemite National Park, Calif., after a boulder fell during a rock slide. Falling boulders are the single biggest force shaping Yosemite Valley, one of the most popular tourist destinations in the nation’s system of national parks. Now large swaths of popular haunts deemed unsafe are closing as officials acknowledge they knew for more than a decade ago that unsuspecting tourists were being lodged in harm’s way. On Thursday, June 14, 2012, the National Park Service will announce that potential danger from the unstable 3,000-foot-tall slab of granite known as Glacier Point, a picturesque promontory that for decades has provided a dramatic backdrop to park entertainment events, will leave uninhabitable large parts of Yosemite Valley’s most popular lodging areas. (AP Photo/Paul Sakuma) less 
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Associated Press | Photo By Paul Sakuma
Wed, Jun 13, 2012 8:03 PM EDT