EntityQ885809· pop 15· linked from 252 articlesBlue MountainsSign in to savemountain range in northeast Oregon and southeast Washington, USAConnectionsUnited StatesCountryOregonEntityIdahoEntityWashingtonEntitygeologyEntitygeographic coordinate systemEntityInternational Standard Book NumberEntitymountain rangeEntitydigital object identifierEntityBald EagleEntityColumbia RiverEntitysummitEntityOCLC, Inc.EntityJSTOREntitybibcodeEntitySnake RiverEntityorogenyEntityOreamnos americanusEntityUnited States Geological SurveyEntityWalla WallaEntityCategoriesLandforms of Columbia County, WashingtonLandforms of Garfield County, WashingtonLandforms of Umatilla County, OregonLandforms of Union County, OregonLandforms of Wallowa County, OregonMalheur National ForestMountain ranges of Baker County, OregonMountain ranges of Grant County, OregonMountain ranges of OregonMountain ranges of Washington (state)Physiographic sections