Journey Home, the Trench, Fraser River, West of the Straight Creek-Fraser River Fault (washingtonlandscape.blockspot.com) I previously noted the Rocky Mountain Trench while returning home from a previous trip this past year (rocky-mountain-trench-rivers). With fog in the Trench and the valleys and snow on covering the high ground above tree line the view was enhanced as I flew over the Trench.
And as he passed by, he saw Levi the son of Alphaeus sitting at the receipt of custom, and said unto him, Follow me. And he arose and followed him. Mark 2:14 KJV
The Columbia begins its 1,243-mile (2,000 km) journey in the southern Rocky Mountain Trench in British Columbia (BC).