The Dennis community which grew up around this historic gristmill was one of the earliest settlements in this section of Northwest Georgia. It was named for Dennis Johnson, who was an early mill operator and postmaster. One of the grindstones indicates that it may have been originally known as Cohutta Mills but this is unclear. Electrified in the 1940s, the mill operated on a limited basis until the 1950s. The original structure survives and is the centerpiece of a property that today includes two wonderful rental cabins on the banks of Rock Creek, known as Dennis Mill Cabins and Events.