The Valley Fire was a wildfire during the 2015 California wildfire season that started on September 12 in Lake County, California.[1] It began shortly after 1:00 pm near Cobb with multiple reports of a small brush fire near the intersection of High Valley and Bottlerock Roads. It quickly spread and by 6:30 PM PDT, it had burned more than 10,000 acres (40 km2).[3] By Sunday, the thirteenth of September, the fire had reached 50,000 acres (202 km2) and had destroyed much of Cobb, Middletown, Whispering Pines, and parts in the south end of Hidden Valley Lake.[4] The fire ultimately spread to 76,067 acres (308 km2), killed four people and destroyed nearly 2,000 buildings,[1][5][6][7] before it was fully contained on October 15, 2015,[1] causing at least $921 million (equivalent to $1.18 billion in 2023[8]) in insured property damage.[9] At the time, the fire was the third-most destructive fire in California history, based on the total structures burned,[10][11] but the Camp Fire (2018) and the North Complex fire in 2020, exceeded that total.