In the Aleutian Islans, on S coast of Amchitka Island, 0.8 mi NNW of Rifle Range Point.
Named for the fossil clams found in the rocks.
Clam Bay, Constantine Harbor, Cyril Cove, Duck Cove, Duk Cove, Kirilof Bay, Landslide Cove, Makarius Bay, Sand Beach Cove, South Bight, Square Bay, Stone Beach Cove, Whale Cove,
Capes:Banjo Point, Chitka Point, Clam Point, Constantine Point, Crown Reefer Point, Grampus Point, Kirilof Point, Low Bluff, Peregrine Point, Petrel Point, Pillow Point, Rifle Range Point, Saint Makarius Point, Sea Otter Point,
Islands:Amchitka Island, Bat Island, Mex Island, Tanasux,
Lakes:Emerald Lake, Hanitxux, Jones Lake, Long Lake, Silver Salmon Lake,
Streams:Bridge Creek, Falls Creek, Jones Creek, Limpet Creek, Teal Creek, Ultra Creek, White Alice Creek,