Parent Lineage
"Tahtlum Peak": 6,567' WA 1,135' Rise
| Depth | Parent | Elevation | Saddle | Prominence | State |
| 1 | "Chinook Peak" | 6,923' | 6,355' | 568' | WA |
| 2 | Crystal Mountain | 7,007' | 4,692' | 2,315' | WA |
| 3 | Cowlitz Chimneys, North | 7,028' | 6,603' | 425' | WA |
| 4 | Cowlitz Chimneys, Middle | 7,428' | 7,111' | 317' | WA |
| 5 | Cowlitz Chimneys, South | 7,612' | 6,640' | 972' | WA |
| 6 | Little Tahoma Peak | 11,142' | 10,292' | 850' | WA |
| 7 | Rainier, Mount | 14,405' | 1,174' | 13,231' | WA |
| 8 | Massive, Mount | 14,427' | 12,444' | 1,983' | CO |
| 9 | Elbert, Mount | 14,439' | 5,346' | 9,093' | CO |
| 10 | Whitney, Mount | 14,500' | 4,423' | 10,077' | CA |
Green = More Prominent Parent
Immediate Children:
| # | Child | Elevation | Prominence | State |
| 1 | Naches Peak | 6,452' | 712' | WA |
| 2 | 6294 | 6,294' | 373' | WA |
| 3 | 6085 | 6,085' | 465' | WA |
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