HELENA - Rural fire crews responded to reports of a wildfire northwest of Helena Tuesday evening, but were unable to immediately access it because of the rough terrain.
Lewis and Clark County Sheriff Leo Dutton said officials planned to wait until daylight to determine a plan of attack for the fire, which was located on Forest Service land near mile marker 24 off of Lincoln Road/Montana Highway 279.
The first firefighters arrived near the scene of the blaze around 6:30 p.m. Initial reports put the fire at about 60 acres with flames about 20 feet high.
The cause of the fire has not been determined.
"It's an odd time with the moisture we've had for a fire to start," Dutton said.
As of Tuesday night, no structures were reported as threatened and no road closures had been enacted.
Birdseye, Canyon Creek and Marysville volunteer departments were called to the fire, but the response was scaled back for the night when officials determined it was accessible only by air and foot. Crews from the U.S. Forest Service and the state Department of Natural Resources and Conservation have been asked to assist, Dutton said.
Air assistance was requested but denied Tuesday because of the unsafe nighttime conditions.