WASATCH COUNTY, Utah — Firefighters have made progress in containing a wildfire burning just south of Park City Monday afternoon.
The Flat Line Fire was sparked Sunday afternoon within Wasatch Mountain State Park, located between Jordanelle Reservoir and Heber City.
Around 2:30 p.m. Monday, officials with the Utah Division of Forestry, Fire and State Lands said the fire had burned 25 acres and was 30 percent contained.
The fire was human-caused and is under investigation. An exact cause has not been released.
The smoke affected visibility on US-40/189, and the highway was closed temporarily Sunday evening as an air tanker dropped retardant on the fire.
No structures have been threatened.
Officials said the fire is burning mainly grass and oak in terrain that is difficult for firefighters to access on the ground.