To reach their present country, people had to pass (frozen) water body. Part of the migrants remain on the opposite side or is drowned
| Areal ID | Tradition |
| 13.1.1.1 | Blackfoot |
| 13.1.1.2 | Sarsee (Tsuu T'ina) |
| 13.1.1.3 | Gros Ventre |
| 13.1.3.4 | Arikara |
| 13.1.5.2 | Cheyenne |
| 13.3.3.2 | Alabama, Koasati |