Located in Benton County , it is the second highest peak in the Central Coast Range .
Grass Mountain is a 3,607 - foot ( 1,099 m ) tall mountain in the Central Oregon Coast Range in the U.S. state of Oregon .
Located in Benton County , Grass Mountain is the second highest peak in the Central Oregon Coast Range     .
Grass Mountain is a 3,607 - foot ( 1,099 m ) tall mountain in the Central Oregon Coast Range in the U.S. state of Oregon .