Cooler weather allowed firefighters to make progress in corralling a stubborn Placer County wildland blaze that has raged for nearly a week.
The Robbers fire, which started July 11, was 60 percent contained by Tuesday night, said Department of Forestry and Fire Protection spokesman Daniel Berlant.
Total acreage burned was 2,650 acres. The onset of cooler weather, higher humidity and lack of major wind helped firefighters.
About 2,000 firefighters continue to work on containment. Officials said continuing favorable weather is helping firefighters strengthen and hold fire lines. On the northern portion of the fire, toward Iowa Hill, there is much work to be done, Berlant said.
"In that area the canyons are incredibly steep," he said. "To get bulldozers in there in some areas is not even possible. To get crews in there is even harder."
In addition to crews hiking into those rugged areas, helicopters dumped water on hot spots. If the fire starts to pick up, two air tankers are based at Grass Valley to assist.