in Shumagin Is., Aleutian Range
Named "Sitymkan" by Lutke (1836, p. 267); published as "Sishimkak" by Father Veniaminov (1840, v. 1, p. 255). The exact location of this island is not known.
Caton Cove, Eagle Harbor, East Bight, Falmouth Harbor, The Kitchen, Larsen Bay, Mist Harbor, Northeast Bight, Sanborn Harbor,
Capes:Cliffs:East Head, Macks Head, Wooly Head,
Islands:Atniliak Island, Bendel Island, John Island, Kagai Island, Kaiasik, Kaniliak, Kauatka, Kulyugayak, Macks Head Island, Nagai Island, Near Island, Sauluktouchikh, Schumachinskaia, Shag Rock, Sitymkan, Tungulik, Turner Island, Twins,
Mountains:Mount Davidson, Eagle Mountain,
Ridges: