Smoke from five wildland fires burning nearly 500,000 acres in Northern California filled the Carson Valley on Thursday.
The Ponderosa fire has burned 24,388 acres in Shasta County, and has destroyed 69 structures so far.
The Rush fire burning just east of Susanville is the largest of the fires on the Nevada-California border.
As of Thursday it has burned an area 42 miles long and 16 miles wide.
Smoke Creek Road, a popular route to Burning Man, has been closed by the fire. The Rush fire, set by lightning on Aug. 12, has burned 317,616 acres. Firefighters expect to have …