Firefighters have begun reining in a central Utah wildfire, called the Solitude Fire, thatâs been allowed to burn itself out. Twelve days after lightning sparked the wildfire, itâs grown to 378 acres as of Saturday and is 40 percent contained. The fire is burning through timber in the Pahvant Range, which is about 10 miles northwest of Richfield in the Fishlake National Forest. After the lightning strike, the flames didnât spread much â until July 26, as temperatures climbed.