The Battle of Honsinger Bluff occurred on August 4, 1873 at a point approximately west of the confluence of the Tongue River and Yellowstone River near Miles City, Montana. The battlefield, on a floodplain of the Yellowstone River, is dominated by a massive gravelly hill to the northeast, often referenced as the "Big Hill" in historical accounts of the battle, but referenced locally as "Yellowstone Hill". This hill is nearly long and between 1 to wide with steep slopes of 200 to . It is the present location of the Miles City Airport. To the east and south lies the Yellowstone River. The floodplain, varying between 1 and in width, extends westerly upstream along the Yellowstone for nearly until it meets Locke Bluff near Hathaway, Montana. Key positions involved a bluff, Honsinger Bluff, on