Yosemite National Park under threat from wildfire that has already burned 9,000 acres

Dozens of wildfires are raging across western America (Pictures: AP)
A wildfire in California that has ripped through more than 9,000 acres in just 48 hours is threatening to burn parts of the Yosemite National Park.
The treasured park, which is famed for its ancient trees and towering mountain ranges, is within 20 miles of the raging River Fire which is being blown towards Yosemite by strong…