Major update in case of backpacker who vanished in Yosemite

The grieving family of a former state park ranger has warned that no-one can take their safety for granted after it took nearly three weeks to find his body in the Yosemite wilderness.

Kirk Thomas Olsen, 61, was a seasoned backpacker and former staffer at Hearst San Simeon State Park in .

But he disappeared during a four-day solo hike of Yosemite's Ostrander Lake trailhead on August 27 after wandering away from the path.

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