Gallatin National Forest officials say the Emigrant Peak fire is burning on 30 acres on steep and rocky terrain.
Park Co. says through its Facebook page that the United States Forest Service has ordered another crew. That would put about 40 people and two helicopters on fire by Monday afternoon.
Smoke jumpers and Yellowstone National Park helicopters responded to the fire Sunday afternoon. It is burning on the south side of Emigrant Peak in Park County.
The Gallatin National Forest has a crew on the fire, and officials are using a full suppression response.
It's believed that the fire is the result of lightning strikes from earlier in the week.
Forest Service officials say in a news release the fire is burning in a mix of live and beetle killed trees and some tree torching has been seen. The terrain is reportedly steep and difficult.
According to Inciweb, the road up Sixmile Creek from its junction with the Dailey Lake Road will be closed until further notice. The Sixmile Creek Trial (#61) and North Fork of Sixmile Creek Trail (#606) will be closed to their junction with Trail #601 north of Monitor Peak. Connector Trail #601 will remain open.
Fire danger is the Gallatin National Forest is currently listed at "moderate."