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.
![Flat Line Map.jpg](https://ewscripps.brightspotcdn.com/dims4/default/f8e29ca/2147483647/strip/true/crop/1829x921+0+0/resize/1280x645!/quality/90/?url=http%3A%2F%2Fewscripps-brightspot.s3.amazonaws.com%2Fcb%2Fa4%2F13b2c37e4aa986450817c22a207f%2Fflat-line-map.jpg)
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 @AltaHotshots crew is putting out some smoldering here.@fox13 pic.twitter.com/Yzq2e6T1Mz
— Chris Arnold (@ChrisArnoldTV) May 23, 2022
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.
Aerial view of the #FlatLineFire. 📸credit: Mike Melton, air attack pic.twitter.com/onWzJdWoJi
— Utah Fire Info (@UtahWildfire) May 23, 2022
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.