Hiker Photographs Grizzly Bear Just Before Deadly Attack

Richard White's final moments were caught in chilling photos.
3:00 | 08/28/12

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Transcript for Hiker Photographs Grizzly Bear Just Before Deadly Attack
Hard to watch. We're going to turn to the chilli iing photos of a hiker's final moments before a grizzly attack. Reporter: Rangers say 49-year-old richard white, seen here on his facebook page, was on the trip of a lifetime. Hiking alone in alaska's vast denali national park. With no witnesses to tell officials what happened, his bloodied camera revealed how a dream adventure ended so deadly. We know what happened because of the physical evidence left behind. Torn and bloody clothing. Reporter: Timestamps on the pictures tell the story. A 7 1/2-minute window that went from beauty to terror. In that time, 26 pictures that rangers won't release without the family's permission. Most of a grizzly bear eating berries. And the last few pictures, taken over a span of 13 seconds, reveal something far more threatening. The bear lifts its head, turns towards white. And begins moving his way. Back country hikers are told to be a quarter mile from any known grizzlies. This may be the first fatal bear attack in denali national park history. But it's not the first time man and bear have gotten too close in alaska. In 2003, tim treadwell recorded himself living with grizzlies in the movie "gri man." There's times that I'm on the precipice of death. And the bears can bite and kill. Reporter: He and his girlfriend were mauled to death as their camera rolled. In the case this week, the rangers found the clear evidence of the attack on white. They shot and killed it from a helicopter. For abc news, neal karlinsky, abc news, seattle.

This transcript has been automatically generated and may not be 100% accurate.

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