Black Mountain Grove, Pier Fire, Sequoia National Forest. Tops of four giant sequoias killed by fire. Twenty percent of known sequoias were killed by fire in 2020 and 2021, fire that is burning 400 degrees hotter because of drier fuels, not because of more fuels. Fire scientists say the signal from drying and drier fuels has overwhelmed the excess fuels signal from Smokey Bear fire suppression.