BOISE, Idaho -

Firefighters have nearly surrounded two massive, south-central Idaho blazes.

The fires kept air tankers, helicopters and scores of hand crews busy in the state for much of the month.

The 170 square miles Beaver Creek fire was bearing down on the towns of Hailey, Ketchum and Sun Valley one week ago, while the 200-square-mile Elk Complex destroyed dozens of cabins and vacation homes in Falls Creek, about 50 miles east of Boise.

Meanwhile, lighting sparked new fires along the Snake River's Brownlee Reservoir 20 miles north of Midvale. It expanded to more than 20 square miles, combining with earlier fires and quickly spreading through grass, brush and timber-filled draws.

Payette National Forest spokesman Brian Harris warned that there may be fire-related closures for the coming Labor Day weekend.