During one of its straightest, steepest sections, Stephens Passage takes a sudden westward bend at the mouth of the Taku River, near the Canadian border. Fed by the Taku Glacier, the Hole in the Wall Glacier, as well as the Inklin and Nakina rivers and the feeder waterfall at its mouth, the Taku is considered one of the most endangered rivers on the planet. A high-octane mix of contrasting interests—commercial and recreational use, mining rights and wildlife preservation—has turned the Taku into an international battleground.