- The Archean Eon (IPA: /ɑːrˈkiːən/ ar-KEE-ən, also spelled Archaean or Archæan), in older sources sometimes called the Archaeozoic, is the second of the four geologic eons of Earth’s history, preceded by the Hadean Eon and followed by the Proterozoic. The Archean represents the time period from 4,031 to 2,500 Ma (millions of years ago). The Late Heavy Bombardment is hypothesized to overlap with the beginning of the Archean. The Huronian glaciation occurred at the end of the eon.
- Salmo-Priest Wilderness (wilderness.net)
Tucked among the Selkirk Mountains in the extreme northeastern corner of Washington, the U-shaped Salmo-Priest Wilderness extends its borders along those of Idaho and British Columbia. Its most prominent features are two very long ridges, generally running southwest to northeast, connected near their northern ends by a ridge crowned by 6,828-foot Salmo Mountain…