Grey Bear Fishing Access Site offers a large open area for camping and picnicking along the Yellowstone River with a gravel boat ramp, toilet facilities, and accommodations for camp trailers up to 32 feet. Located off I-90 Exit 367 via the Frontage Road and N.

Yellowstone Trail Road, the site provides a 7-day camping limit with fees and is closed to all weapons use in the developed area. This is a popular access point for both anglers and recreational floaters on the upper Yellowstone River.