Firefighters continued to battle the Round Peak Fire east of Springville on Wednesday, and have been successful at keeping it away from any homes and buildings.

Cooler temperatures and less wind overnight helped crews keep the fire from spreading down the mountain toward nearby homes. The fire was started by a campfire about 9:30 p.m. Sunday, according to a spokeswoman for the Uinta-Wasatch-Cache National Forests, and remains under investigation.

By Wednesday evening, the blaze had grown to 235 acres and was 40% contained. More than 130 firefighters from several different agencies are working to contain the fire, along with three helicopters and six air tankers, which are dropping water and fire retardant.

The Bonneville Shoreline Trail in Springville and the Squaw Peak/Camel Pass Road between the Rock Canyon Campground and Hobble Creek Road have both been closed because of the fire.

A second fire burning in Box Elder County, called the Radio Hill Fire — believed to have been caused by lightning — has grown to more than 2,300 acres and is 30% contained. It’s in a remote area north of Interstate 84 and west of I-15 near the Utah-Idaho border and is not threatening any buildings.

More than 70 firefighters and a pair of helicopters are working to contain that blaze.

And another blaze broke out in Tooele County. The South Rim fire there, initially burning behind homes in Stockton, covered 350 acres but was 80% contained by nightfall. Investigators believe it was started by two birds on a power line.