This photo provided by the National Park Service shows what appears to be a smoldering tree in Sequoia National Park, Calif., on April 22, 2021. A giant sequoia has been found smoldering and smoking in an area of Sequoia National Park burned by one of the huge wildfires that scorched California last year. The National Park Service said Wednesday, May 5, 2021, that the cause of the tree fire appears to be the 2020 Castle Fire, which burned more than 270 square miles in the Sierra Nevada. (Tony Caprio/National Park Service via AP)