Missouri River Right is a 7.28 km water trail through Montana's dramatic Gates of the Rocky Mountains, featuring towering 1,200-foot limestone cliffs documented in Meriwether Lewis's historic 1805 journal. The trail follows the Missouri River through a stunning limestone canyon, offering visitors a chance to experience the same awe-inspiring views that captivated the Lewis and Clark expedition while navigating this historic waterway at 1,094 meters elevation.