A lightning-caused wildfire is burning deep in the Bob Marshall Wilderness, according to the Flathead National Forest.
The Three Sisters Fire is located about 35 miles northeast of Swan Lake. It was first detected Aug. 4. The fire has burned about 43 acres in the Three Sisters Creek area, near the boundary of the Lewis and Clark National.
Officials are allowing the fire to take its natural course on the landscape, although efforts will be made to suppress it if it threatens U.S. Forest Service buildings or infrastructure. There are no trails closed at this time.
This story will be updated with more information when it becomes available.