One of the largest conservation efforts in the history of the United States, the Continental Divide National Scenic Trail (CDT)extends 3,100 miles from Canada to Mexico. The CDT encounters a multitude of ecosystems from tundra to desert, hosts a rich variety of wildlife, and preserves nearly two thousand natural, cultural, and historical treasures. Considered one of the greatest long-distance trails in the world, it is the highest, most challenging, and most remote National Scenic Trail.