Yosemite Wildfire Forces Evacuations

Helicopters called in to help hiker trapped by the flames in the famed national park.
1:56 | 09/08/14

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Transcript for Yosemite Wildfire Forces Evacuations
Now to the wildfire raging in yosemite national park. Catching so many people offguard. Helicopters evacuating hikers. Ryan Owens is there this morning and has the latest. Reporter: Good morning, robin. The fire is in a row moemote section of the park. The only way to fight this right now is from the air. It's also the only way to rescue people. One of America's treasures is burning this morning. And these hikers were so close to the fire, they had to be plucked to safety by helicopter. Rescue crews saved about 100 hikers stranded near half dome, one of yosemite's iconic rock formations. You could see half dome, the dplams, the smoke. Hopefully nobody has been hurt. Reporter: The fire is in a remote part of the national park. It's burned 700 acres. We spoke to this rescued hiker. It was nerve racking because we didn't know what was going on. It was a very large fire. It was not safe to be walking back down through the trail. Reporter: Watching their loved ones saved from harm's way just I the nick of time may have been even tougher on the hikers' families. I don't know if they're dead or alive. I have to find out. Reporter: This morning, he and his fee iance are back together. What caused the blaze? Investigates are not sure. They suspect a tiny fire sparked by lightning that happens been smoldering for a week may have picked up again. A little perspective. So far, this fire has burned 700 acres. Yosemite national park is 750,000 acres. No homes are in danger. Neither are any people, except, of course, those hikers who are safe this morning.

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

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