Firefighters have contained a 21,000 acre fire near the Idaho border.
A lightning storm sparked the blaze, called the Owyhee Canyon fire, Sunday night.
A Bureau of Land Management spokesman said the fire grew more than 10,000 acres Monday morning. But he added that the fire is in a remote area and no homes are in direct danger.
The northwestern perimeter of the fire is approximately 1.5 miles south of Rome, Oregon.
Crews will remain in the area to make sure the fire is contained and mop up any remaining fire.