EntityQ1566089· pop 18· linked from 275 articlesThree SistersSign in to savethree volcanic peaks of the Cascade Volcanic Arc and the Cascade Range in OregonConnectionsbasaltEntityrhyoliteEntityUnited States Geological SurveyEntitytree lineEntitydaciteEntityCaliforniaEntityvolcanoEntityOregonEntityWashingtonEntityBritish ColumbiaEntitygeographic coordinate systemEntityInternational Standard Book NumberEntityglacierEntitySalixEntityGrover ClevelandPersondamEntityIndigenous peoples of the AmericasEntityU.S. stateEntitycougarEntitymountain rangeEntityCategoriesCascade RangeCascade VolcanoesCommons link from WikidataDeschutes National ForestDormant volcanoesLandmarks in OregonMountains of Deschutes County, OregonMountains of Lane County, OregonMountains of OregonQuaternary OregonShield volcanoes of the United StatesStratovolcanoes of Oregon