This is a pretty waterfall located right off of the Ozark Highland Trail about 6.5 miles North of Oark. It is about 0.25 miles west from the trailhead parking area. For more information you may want to refer the Tim Ernst's book - Arkansas Waterfalls Guidebook.
The cache is an ammo can that is hidden about 50 feet off the trail to the south. Please bring your camera and take time to relax and hopefully get some great photos.