The Quarry Fire, which had scorched 341 acres by July 31, was burning perilously close to homes in northern Colorado, according to the Jefferson County Sheriff’s Office.Despite its proximity, no structures had been damaged, they said, thanking fire crews for their efforts.The Quarry Fire is one of four significant fires burning in Colorado, including also the Alexander Mountain Fire, the Stone Canyon Fire and the Lake Shore Fire. Credit: Jeffco Sheriff via Storyful