Fullers Bottom trailhead serves as the put in for those wishing to hike or float through the Little Grand Canyon. This hike explores the San Rafael river as it cuts through the Little Grand Canyon. This area is a popular 2-3 day backpacking trip with primitive campsites where user are required to practice leave no trace ethics. The San Rafael River should only be floated in small crafts above 200 CFS and large crafts above 500 CFS. Hikers should only attempt to hike this section when the river is below 50 CFS. The hike is approximately 18 miles with numerous river crossings required. The side canyons along the hike offer endless miles of exploring.