A firefighter cools a burning tree at the Oak Fire near Midpines, northeast of Mariposa, California, on July 23.
Mandatory Credit:	David Mcnew/AFP/Getty Images

A firefighter cools a burning tree at the Oak Fire near Midpines, northeast of Mariposa, California, on July 23.
Mandatory Credit: David Mcnew/AFP/Getty Images

Stories this photo appears in:

Tease photo

California's rapidly-growing Oak Fire engulfs homes near Yosemite National Park as it burns more than 16,000 acres

As thousands of residents were forced to flee a booming wildfire outside California's Yosemite National Park over the weekend, some learned their homes had completely collapsed into ash and debris.