Box Canyon Boat Ramp is a concrete block put-in located just downstream of Island Park Dam on the Henrys Fork Snake River, offering access to a 5. 5-mile float to Last Chance with swift rapids and lava boulder-strewn sections.

The ramp accommodates 15 parking spaces and includes restroom facilities, though potable water is not available; day-use only with no overnight camping.

This section features special fishing regulations and can be challenging to navigate at lower flows (1,000 CFS), with a trail along river left providing wade access to Last Chance.