Mamachatpam

Mamachatpam is a name of the Yakama people, whose river country lies east of the Cascade Mountains. The Yakima River runs through dry valleys before joining the Columbia, and its salmon were an important food for communities along its banks. Roots and game from the surrounding plateau supplemented the catch. A principal village stood near the narrows known as Union Gap, and trails linked the valley with neighbouring peoples and the fisheries of the Columbia.