Mack's Inn Boat Ramp is an unpaved take-out point on the Henrys Fork Snake River located at the end of a scenic 3. 9-mile float from Big Springs, featuring 40+ parking spaces, restrooms, trash cans, and adequate space to turn trailers.

The ramp serves as the primary exit before the impassable Upper and Lower Coffee Pot Rapids, making it essential for floaters on this section. Wade access is available in the surrounding National Forest area upstream of the ramp.