Ongoing drought conditions have contributed to the 29 million tree deaths in California, a number that is still on the rise. In addition to millions of oak trees in the state being killed off by sudden oak death disease, bark beetles have also played a large role in taking out the timbers.

“The tree mortality that we’re experiencing, it’s really unprecedented,” California Department of Forestry and Fire Protection Director Ken Pimlott said in a video for the California State Association of Counties (CASC). “Unless you get into the Sierra Nevada, and particularly the central and southern Sierras, you don’t necessarily understand the gravity of it.”