In 1874 miners encroached on the western margins of Crow lands in the Absaroka Range, and the reservation was reduced in 1875. The first Crow Agency was within these ceded lands and so the Agency was relocated eastward to a new site north of modern-day Absarokee, Montana. The second Crow Agency (1875-1884) was still located north of the Absaroka Range of Mountains but about 66 miles further east of Fort Parker in the Yellowstone Valley, on the Stillwater River which was a tributary of the Yellowstone River.