Heading on the W slope of Gunsight Mountain in the Talkeetna Mountains and flowing NW to Squaw Creek, 55 mi. NE of Palmer. 3.2 miles long.
Named by U.S. Geological Survey (USGS) in 1956 for the fossil clam belonging to the genus Inoceramus, which is abundantly found in the valley.
Big Spoon, Lil' Kahuna, Little Spoon,
Lakes:Bug Lake, Knob Lake, North Knob Lake, South Lake, Squaw Lake,
Mountains:Gunsight Mountain, Horn Mountain, Lion Head, Sheep Mountain, Syncline Mountain, Mount Wickersham,
Mountain Passes:Belanger Pass, Cameron Pass, Limestone Gap, Tahneta Pass,
Mountain Ranges:Horn Mountains, Limestone Hills,
Ridges:Rivers:East Fork Matanuska River, South Fork Matanuska River,
Streams:Alfred Creek, Ammonite Creek, Bench Creek, Bitter Creek, Bubb Creek, Camp Creek, Caribou Creek, Dan Creek, Dick Creek, Divide Creek, Flume Creek, Fortress Creek, Glacial Fan Creek, Greta Creek, Gunsight Creek, Gypsum Creek, Inoceramus Creek, McDougall Creek, Mead Creek, Meyer Creek, Middle Creek, Mouse Creek, Papoose Creek, Pass Creek, Placer Creek, Rock Glacier Creek, Sawmill Creek, Sawmill Creek, Sheep Creek, Shovel Creek, Sladen Creek, Squaw Creek, Trail Creek, West End Creek, Wood Creek, Yellow Jacket Creek,
Valleys:Jackass Canyon, Limestone Gulch, Money Gulch, Noon Gulch, Porphyry Gulch,