The 287,000-acre Gros Ventre Wilderness was established in 1984 and covers the mountain country just east of Jackson Hole [1]. This range trends mainly in a northwest-southeast direction and is probably best known for Sleeping Indian Mountain (maps now call it Sheep Mountain, but locals never use that appellation), the distinctive rocky summit visible from Jackson Hole.
Although there are densely forested areas at lower elevations, the central section of the wilderness lies above timberline, and many peaks top 10,000 feet. The tallest is Doubletop Peak at 11,682 feet. The Tetons are visible from almost any high point in the Gros Ventre, and meadows line the lower-elevation streams.
Elk, mule deer, bighorn sheep, moose, and black bears are found here, and a few grizzlies have been reported. The Forest Service office in Jackson has more information on the wilderness, including brief trail descriptions and maps.
Several roads provide good access to the Gros Ventre Wilderness: Gros Ventre River Road on the northern border; Curtis Canyon Road on the western margin; and Granite Creek Road to the south. Flat Creek is rough and accessible only in a 4WD vehicle. Hikes beginning or ending in the Granite Creek area have the added advantage of nearby Granite Hot Springs [2], a great place to soak tired muscles.
For a beautiful hike, follow Highline Trail from the Granite Creek area across to Cache Creek, a distance of 16 miles. This route passes just below a row of high and rugged mountains, but because it isn’t a loop route, you’ll need to hitchhike or set up a shuttle back. Plan on three days for this hike. The area is crisscrossed with game and cattle trails, making it easy to get lost, especially on the headwaters of Little Granite Creek. Talk with Forest Service folks before heading out, and make sure that you know how to read a map and compass.
A third hike begins at the Goosewing Ranger Station, 12 miles east of Slide Lake on Gros Ventre River Road. Take the trail from here to Two Echo Park (a fine camping spot) and then continue up to Six Lakes. You can return via the same trail or take the Crystal Creek Trail back to Red Rock Ranch and hitch back to Goosewing. The trail distance is approximately 23 miles round-trip.
Links:
[1] http://www.moon.com/destinations/yellowstone-grand-teton/jackson-hole
[2] http://www.moon.com/destinations/yellowstone-grand-teton/jackson-hole/bridger-teton-national-forest/granite-hot-springs