Wildfires near Yosemite National Park
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Wildfires near famous Yosemite National Park in California

23 August 2013 Last updated at 09:09 BST

Firefighters in the US are trying to control raging wildfires near the famous Yosemite National Park in California.

Tourists visiting the area in its busiest season have been told to leave and homes nearby have been evacuated.

The fire's been burning for a week and has tripled in size in the last twenty-four hours.

A state of emergency has been declared around the area.

In the state of Wyoming, wildfires have been burning near Yellowstone National Park.