Klamath Mountains | Level 4 (Parent) |
         Kalmiopsis Area | Level 5 (Sibling) |
         Siskiyou Mountains | Level 5 (Sibling) |
         Marble Mountains | Level 5 (Sibling) |
         Scott-Scott Bar Mountains | Level 5 (Sibling) |
         Salmon Mountains | Level 5 |
                 North Salmon Mountains | Level 6 (Child) |
                 West Salmon Mountains | Level 6 (Child) |
                 Trinity Alps | Level 6 (Child) |
         Trinity Mountains | Level 5 (Sibling) |