 In 1863 the Sierra Mining district was formed 10 miles northeast of Mill City, with Dun Glen as its business center.In 1863 and 1865 to 1866, at the town's request, a small army garrison was stationed at Camp Dun Glen within the town to protect the miners from Indians in the early part of the Snake War.Dun Glen in the 1860s was one of the largest towns in northern Nevada.