A California fire that ignited within the southern part of Yosemite National Park on Thursday exploded overnight, quintupling in size and reaching the famed Mariposa Grove, park officials said. 

Park spokesperson Scott Gediman told SFGATE on Friday morning that the Washburn Fire was 250 acres and flames had reached the Lower Grove. On Thursday night, the fire was mapped at about 46 acres

The fire started south of the Mariposa Grove at about 2 p.m. on July 7. The grove was evacuated on Thursday and is closed until further notice, Yosemite National Park said. 

You can find a map of the evacuation orders on the Yosemite National Park website.

Firefighters are responding to the blaze both on the ground and from the air. 

Photos showed visible plumes of smoke for visitors in the park. 

The Washburn Fire ignited within Yosemite National Park. 

Yosemite National Park

One of the most popular visitor attractions in Yosemite National Park, Mariposa Grove has more than 500 mature giant sequoias. Giant sequoias are the largest trees in the world, and the grove holds trees that may be be thousands of years old. One of the best-known trees, the towering Grizzly Giant, is estimated to be 2,700 years old. 

In 1864, President Abraham Lincoln signed the Yosemite Valley Grant Act into law, protecting the land, including Mariposa Grove, for the public and future generations. The bill would inspire what would become the National Park System. 

Mariposa Grove was previously closed for three years, from 2015 to 2018, for a $40 million restoration project.

The cause of the fire is under investigation.

This is a developing story and information will be added as it becomes available. 

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