Parent Lineage
Mastiff, Mount: 6,741' WA 481' Rise
| Depth | Parent | Elevation | Saddle | Prominence | State |
| 1 | Howard, Mount | 7,070' | 4,140' | 2,930' | WA |
| 2 | Whittier Peak | 7,281' | 6,780' | 501' | WA |
| 3 | David, Mount | 7,430' | 4,952' | 2,478' | WA |
| 4 | "Kololo Peaks" | 8,243' | 7,280' | 963' | WA |
| 5 | Glacier Peak | 10,549' | 3,009' | 7,540' | WA |
| 6 | Little Tahoma Peak | 11,142' | 10,292' | 850' | WA |
| 7 | Rainier, Mount | 14,405' | 1,148' | 13,257' | 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:
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