Cavin Park was working for the Quinault Indian Reservation’s invasive plant crew when he watched a towering crane stack logs 100 feet across the bed of the Upper Quinault River. Pile drivers 70-feet high stood against the backdrop of the foggy, spruce-filled woods that give Washington’s Pacific coast its spirit of mysterious beauty. The purpose of the construction project was to mimic nature: The workers formed log jams meant to restore the River’s ecosystem and its depleted blueback salmon population. Park, who is now a Forestry Practices Technician for the…