FILE - In this 2006 file photo provided by the National Park Service, tourists climb Half Dome at Yosemite National Park, Calif. A long-awaited plan that officials say will make safer the iconic climb up Half Dome in Yosemite National Park has been approved. The hand-rail cables that some environmental groups argued don't belong in a wilderness will stay, as will a lottery that will limit the number of hikers to roughly 400 a day. Over the past decade the route has been inundated with up to 1,200 nature lovers, causing traffic jams and a surge in calls for rescue.  (AP Photo/National Park Service, File)
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