North Cascades | Level 4 (Parent) |
         Far Northern Cascade Range | Level 5 (Sibling) |
         Skagit Range | Level 5 (Sibling) |
         Hozameen Range | Level 5 (Sibling) |
         Okanogan Range | Level 5 |
                 North Okanogan Range | Level 6 (Child) |
                 North Washington Pass | Level 6 (Child) |
                 Central Pasayten Area | Level 6 (Child) |
                 Cathedral Range | Level 6 (Child) |
                 Snowy-Windy-Chopaka | Level 6 (Child) |
                 Tiffany Range | Level 6 (Child) |
                 Aeneas-Palmer Area | Level 6 (Child) |
                 Loup Loup Area | Level 6 (Child) |
         Mountain Loop Area | Level 5 (Sibling) |
         Central North Cascades | Level 5 (Sibling) |
         Methow Mountains | Level 5 (Sibling) |
         Glacier Peak-North Stevens Pass Area | Level 5 (Sibling) |
         Entiat Mountains | Level 5 (Sibling) |
         Chelan Mountains | Level 5 (Sibling) |