It's called the Ditch Fire and it is estimated at 4,300 acres.
It has grown over the past week in the middle of the Selway-Bitterroot Wilderness.
The forest fire started in the Moose Creek Ranger District and recently crossed into the West Fork Ranger District of the Bitterroot National Forest.

The Nez Perce-Clearwater National Forests fire update Monday reported that the fire was burning on the west side of the Selway River. The fire burned over the Shearer Air Strip last week and the airstrip reportedly re-opened last Friday.

Nez Perce officials report that the West Fork district is managing the fire on the Montana side, which includes North Star and Running Creek Ranches.

Meanwhile, in the middle of the Selway-Bitterroot Wilderness, the Vista Fire at 2,000 acres is near the Shissler Lookout and crews are installing structure protection equipment at Moose Creek Ranger Station and East Moose Bridge.

Back down by the Magruder Road Corridor is the Porcupine Complex in the Bargamin Creek drainage. With the smoke, it's hard to see the acreage, but best guess is the Bleak Fire (2 miles south of Poet Creek Campground) is 700 acres and is approaching the Magruder Road Corridor near Dry Saddle. The Porcupine Fire (3 miles southeast of Granite Springs Campground) is estimated at around 100 acres. The smaller Hot Springs Fire is 3 miles north of Poet Creek Campground.