Columbia River Basalt Group
- Maury Island Marine Park (kingcounty.gov)
Maury Island Marine Park is located on the east side of Maury Island, a peninsula of Vashon Island. One of the largest undeveloped properties located directly on Puget Sound with more than 1 mile of shoreline, the park provides stunning views of the East Passage, Mount Rainier and the Cascade Mountains. The site had significance for early Native Americans and is referenced in a legend about Snake People who arrived from the mainland as part of war party.
- Salmon River (Idaho) (Wikipedia)
The Salmon River, also known as the “River of No Return”, is a river located in the U.S. state of Idaho in the western United States. It flows for 425 miles (685 km) through central Idaho, draining a rugged, thinly populated watershed of 14,000 square miles (36,000 km2). The river drops more than 7,000 feet (2,100 m) from its headwaters, near Galena Summit above the Sawtooth Valley in the Sawtooth National Recreation Area, to its confluence with the Snake River. Measured at White Bird, its average discharge is 11,060 cubic feet per second (82,700 US gal/s; 313 m3/s). The Salmon River is the longest undammed river in the contiguous United States.
Columbia River Basalt Group map shows main regions of basalt exposure in Washington, Oregon, Idaho and Nevada, USA. (usgs.gov)