Nation Washburn Fire threatens iconic Yosemite sequoia grove; firefighters battle dry conditions, tough terrain July 10, 2022July 10, 2022 Celina Tebor, USA TODAY Comments Off on Washburn Fire threatens iconic Yosemite sequoia grove; firefighters battle dry conditions, tough terrain The Washburn Fire in Yosemite National Park grew in size Sunday, as rough terrain and hot weather proved difficult for battling the blaze.