Grizzly Lake Trail, located between Mammoth and Norris, offers a moderate four mile roundtrip hike that passes through a twice-burned lodgepole pine stand (1976 and 1988) and through nice meadows. The lake is long, narrow, and heavily wooded. It can be difficult to access
beyond the trail end of the lake. Marshiness and mosquitos can make travel difficult early in the season. The lake is popular with anglers due to a strong population of small brook trout.
Yellowstone has a designated backcountry campsite system, and a Backcountry Use Permit is required for all overnight stays. Each designated campsite has a maximum limit for the number of people and stock allowed per night. The maximum stay per campsite varies from 1 to 3 nights per trip. Campfires are permitted only in established fire pits. Wood fires are not allowed in some backcountry campsites. A food storage pole is provided at most designated campsites so that food and attractants may be secured from bears. Neither hunting nor firearms are allowed in Yellowstone's backcountry.
Permits may be obtained only in person and no more than 48 hours in advance of your trip.Permits are available from most ranger stations and visitor centers. In order to obtain the best information on trail conditions, permits should be obtained from the ranger station or visitor center nearest to the area where your trip is to begin. The Backcountry Use Permit is valid
only for the itinerary and dates specified. Backcountry travelers must have their permits in possession while in the backcountry.
Directions from Mammoth: Travel south 14.4 miles or 6.6 miles north of Norris and park at a pullout on the west side of the road.
Junw through October .