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CRAIG, Colo. — The Peakaboo Fire in a remote, rugged area about 50 miles west of Craig in northwest Colorado has grown to 12,675 acres, the Bureau of Land Management said Saturday.

The fire has nearly doubled in size since Wednesday and is 5 percent contained.

The fire is burning in pinion-juniper, grass and sagebrush on Peekaboo Ridge, just west of Irish Canyon and Moffat County Road 10N and north of Highway 318.

Three ranches, multiple ranch structures, Dinosaur National Monument and Browns Park National Wildlife Refuge are near the fire, and are being monitored by ground crews.

On Friday, firefighters worked on the north portion of the fire scouted safe access to the fire line instead of having to be flown in with a helicopter.

On the south and southwestern portions of the fire, firefighters and air resources focused on structure protection and keeping the fire north of Highway 318.

Several large air tankers and single-engine air tankers made retardant drops to limit the fire spread to the south and southwest.

In the afternoon, strong outflow winds from passing thunderstorms pushed the fire in numerous directions, making control difficult.

On Saturday, crews worked to build direct containment lines where feasible.

Limited resources, combined with challenging access to the fire, are making it difficult to meet the full suppression strategy, according to officials.

A temporary flight restriction is in place around the fire to allow air operations to proceed safely.

The fire was started by lightning on June 27.

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