connects two hilly sections of southern Nagai I., in Shumagin Is., Aleutian Range
So named because a vessel attempted at night to pass between the adjacent hilly sections of the island; published in 1916 Coast Pilot (v. 2, p. 172) by U.S. Coast and Geodetic Survey (USC&GS).
Eagle Harbor, Falmouth Harbor, Larsen Bay, Sanborn Harbor,
Capes:Cape Horn, Granite Point, Mountain Point,
Cliffs:Islands:Atniliak Island, John Island, Kagai Island, Kaiasik, Kaniliak, Kauatka, Kulyugayak, Macks Head Island, Nagai Island, Near Island, Sauluktouchikh, Schumachinskaia, Shag Rock, Sitymkan, Tungulik,
Mountains:Mount Davidson, Eagle Mountain,
Ridges: