Central Montana Rocky Mountains | Level 3 (Parent) |
         Northwest Montana Ranges | Level 4 (Sibling) |
         Glacier National Park Ranges | Level 4 (Sibling) |
         Bob Marshall Ranges | Level 4 (Sibling) |
         West Central Montana Ranges | Level 4 (Sibling) |
         Central Montana Ranges | Level 4 |
                 Big Belt Mountains | Level 5 (Child) |
                 Bridger Range | Level 5 (Child) |
                 Highwood Mountains | Level 5 (Child) |
                 Little Belt Mountains | Level 5 (Child) |
                 Castle Mountains | Level 5 (Child) |
                 Crazy Mountains | Level 5 (Child) |
                 Judith-Moccasin Ranges | Level 5 (Child) |
                 Big Snowy Mountains | Level 5 (Child) |
                 Bull Mountains | Level 5 (Child) |
         Southwest Montana Ranges | Level 4 (Sibling) |