The Roaring Lion Fire grew about 37 acres Monday, August 15, with hot, dry weather causing trees to burn near the top of Ward Mountain southwest of Hamilton.

The forest fire on the Bitterroot National Forest is 70 percent contained at 8,311 acres and officials expect it to burn in the steep, rugged area until the end of fire season.

Monday, helicopters dumped water on some of the hot spots and a single engine air tanker dropped retardant to keep the fire inside a natural bowl on the side of the mountain.

Lookouts will continue watching the fire and aircraft are expected to fly again today, August 16, to cool down the blaze. Elsewhere, ground crews are continuing to mop up around the fire perimeter and around homes. About a hundred people are assigned to the Roaring Lion Fire. The incident command will be moving to the Darby Ranger Station later this week, officials told the Ravalli County Commissioners Monday.