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The Timber Crater 6 Fire burning in the northeast corner of Crater Lake National Park has approached the boundary of the Fremont-Winema National Forest, and authorities enacted an emergency closure on the Chemult Ranger District of the forest Saturday evening.

At its widest point, the closure encompasses the area 3 miles west of Diamond Lake Junction on Highway 97 to the intersection of the Pacific Crest Trail and Highway 138. It also reaches north from Forest Road 9777 and Cottonwood Creek to south at Forest Road 7033 and Pothole Butte. Highway 138 remains open.

As of late Friday afternoon, the fire had not yet reached the Fremont-Winema National Forest, but was expected to within 24 hours.

The fire is one of several started by lightening that struck Crater Lake National Park on July 15.

Firefighters may use controlled burning, a barrier tactic used to manage the path of a fire, south of Highway 138 and west of Highway 97.

Authorities said that smoke would linger in the area for days ahead, but there are no closures within the park as of now.