Parent Lineage
Island Mountain: 4,475' WA 1,255' Rise
| Depth | Parent | Elevation | Saddle | Prominence | State |
| 1 | 5458 | 5,458' | 5,100' | 358' | WA |
| 2 | "Lemah One" | 7,037' | 6,678' | 359' | WA |
| 3 | Lemah Mountain | 7,520' | 6,538' | 982' | WA |
| 4 | "Chimney Rock" | 7,745' | 4,993' | 2,752' | WA |
| 5 | Daniel, Mount | 7,977' | 4,469' | 3,508' | WA |
| 6 | Stuart, Mount | 9,418' | 4,076' | 5,342' | WA |
| 7 | Glacier Peak | 10,549' | 3,009' | 7,540' | WA |
| 8 | Little Tahoma Peak | 11,142' | 10,292' | 850' | WA |
| 9 | Rainier, Mount | 14,405' | 1,174' | 13,231' | WA |
| 10 | Massive, Mount | 14,427' | 12,444' | 1,983' | CO |
| 11 | Elbert, Mount | 14,439' | 5,346' | 9,093' | CO |
| 12 | Whitney, Mount | 14,500' | 4,423' | 10,077' | CA |
Green = More Prominent Parent
Immediate Children:
| # | Child | Elevation | Prominence | State |
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