** ADVANCE FOR SUNDAY, JAN. 28 FILE ** Workers construct an elevated walkway platform over a normally flooded area of the valley floor near Yosemite Falls, Nov. 20, 2003, in Yosemite National Park, Calif. In November 2006, a federal judge barred work crews from finishing $60 million in construction projects in Yosemite Valley, siding with a small group of environmentalists who sued the U.S. government. The plaintiffs say further commercial development threatens the Merced River and would turn the park into a playground for the rich. (AP Photo/Ben Margot)