Years of controlled burns have thinned flammable material in Mariposa Grove, paying off during Washburn Fire, experts say
YOSEMITE NATIONAL PARK — Last year and the year before, in an unprecedented environmental disaster, wildfires in California’s Sequoia National Park and nearby national forests roared through treasured sequoia groves in the Southern Sierra Nevada, generating flames hundreds of feet high and killing nearly 20% of all the giant sequoia trees left in the world.
In recent days, firefighting crews also were able to build hand lines around the famed grove, and set up a sprinkler system next to the Grizzly Giant and several other massive sequoias. As the drama plays out, the fire is being cited as an example of how other giant sequoia groves across the Sierra can be saved in an era of hotter, more intense fires made worse by climate change.
But starting in the late 1800s, settlers began dousing lightning fires. Native tribes who set fires for centuries were removed from the land. And the forests became thicker, more choked with dead wood and smaller, flammable vegetation. YOSEMITE, CALIFORNIA – JULY 12: A National Forest crew arrive to mop up an area after a backfire was set up to prevent the Washburn Fire from expanding near the south entrance to Mariposa Grove in the Yosemite National Park in Yosemite, Calif., on Tuesday, July 12, 2022.
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