High Quality Content by WIKIPEDIA articles! The Bob Marshall Wilderness is a wilderness area in Flathead National Forest of western Montana in the United States. It is named after Bob Marshall (1901–1939), an early forester, conservationist, and co-founder of The Wilderness Society. The Bob Marshall Wilderness extends for 60 miles (95 km) along the Continental Divide and consists of 1,009,356 acres (4,085 km?). No roads cross the area. The wilderness was originally part of the South Fork, Pentagon, and Sun River primitive areas which were combined into the wilderness in 1964. Along with the adjoining Scapegoat and Great Bear wildernesses, these three areas make up the Bob Marshall Wilderness Complex and extend into the Lolo, Flathead, Helena, and Lewis and Clark National Forests. All three wildernesses total 1,535,352 acres (6,070 km?). As directed by the creation of the Wilderness Act in 1964, "no roads or structures were to be built, vehicles and other mechanical equipment were not...