Wildfire near Yosemite National Park threatens its largest grove of sequoia trees

A helicopter drops water on the Washburn Fire burning in Yosemite National Park on Saturday. (Noah Berger/AP)

A wildfire near Yosemite National Park is causing firefighters to set up near a grove of giant sequoia trees that includes the famous Grizzly Giant.

First reports of the Washburn Fire came Thursday near the park's Washburn Trail and Mariposa Grove of sequoias, according to a statement from the National Park Service and California's Interagency Management Team 13.