Tributary of the Itkillik River. The streams on the northern side of the Brooks Range flow generally norrthward through deep, U-shaped, glacially sculptured valleys that traverse the Arctic foothills. Northern Brooks Range. Gates of the Arctic National Park and Preserve (4 x 5 inch fuji velvia film, Ebony RW45 camera, Rodenstock Grandagon 90 mm lens), 2011.