northbound on State Route 9
- Mesozoic (Wikipedia)
The Mesozoic Era is the second-to-last era of Earth’s geological history, lasting from about 252 to 66 million years ago, comprising the Triassic, Jurassic and Cretaceous Periods. It is characterized by the dominance of archosaurian reptiles, such as the dinosaurs; a hot greenhouse climate; and the tectonic break-up of Pangaea. The Mesozoic is the middle of the three eras since complex life evolved: the Paleozoic, the Mesozoic, and the Cenozoic.
southbound on State Route 9
- Nooksack River § South Fork (Wikipedia)
The South Fork Nooksack River, about 50 miles (80 km) long, rises in southern Whatcom County, east of Twin Sisters Mountain near Bell Pass and Lake Wiseman. It flows briefly south, entering Skagit County, then northwest to re-enter Whatcom County. It flows past the town of Acme, and due north until merging with the North Fork near the State Route 9 bridge, 1.6 km (1 mi) southeast of Deming and the Nooksack Indian Reservation.
Mount Baker, WA simplified hazards map (usgs.gov)