at W end of Shublik Mts., 47 mi. NW of Mount Michelson, Brooks Range
On August 5, 1826, Sir John Franklin (1828, p. 150) wrote, "Lieutenant Back made a sketch of the most western mountain, which I had the pleasure of naming in honor of Dr. Copleston, Provost of Oriel College, now Bishop of Landaff."
Cache Creek, Eagle Creek, Ignek Creek, Nanook Creek,
Valleys:Canning Valley, Ignek Valley, Ikiakpaurak Valley, Ikiakpuk Valley,