_The Cascade Canyon Trail_ passes through a chasm whose walls rise sheer on either side for thousands of feet. By this trail one penetrates into the deepest recesses of the Tetons, skirting the bases of several tall peaks. The north fork of Cascade Canyon Trail leads to Lake Solitude and the south fork leads to the Limestone Wall and Alaska Basin. _The Death Canyon Trail_ traverses the full length of a canyon which in its lower portion is of profound depth and grandeur, as awesome as its name. It emerges above into broad sunny meadows. The trail up the north fork of Death Canyon leads to Alaska Basin and a junction with the trail from the south fork of Cascade Canyon. The former trail along the east face of the wall has been destroyed by rock slides and IS NO LONGER SAFE FOR ANY TRAVEL. While trails are traversable during the greater part of the summer, some of them may be blocked by snow at the beginning of the season. Those visitors expecting to use the trails early in the summer should inquire at park headquarters or at the Jenny Lake Museum for information regarding their condition. [Illustration: _The Jenny Lake Museum—Public Information Center._] Mountain Climbing Persons inexperienced in mountain climbing are requested to obtain the services of a mountain-climbing guide, or attempt climbs only when accompanied by experienced climbers. Since 1931, authorized non-Government guide service has been available in the park. In view of the difficulties one encounters on the Teton peaks and the hazards they present, all prospective climbers are urged to make use of the guide service. If venturing out unguided, climbers should consult rangers or guides for full information relating to routes and equipment. Failure to heed this caution has led to accidents and even fatalities. Climbing parties are required, under all circumstances, to report at either park headquarters or Jenny Lake Museum before and after each expedition, whether guided or unguided. CLIMBING ALONE, WITHOUT A COMPANION, IS NOT PERMITTED. The climbing season varies with the weather and the amount of snow in the range; it is at its best during July, August, and early September. In most cases it is advisable to allow 2 days for an ascent of Grand Teton, Mount Moran, or Mount Owen and 1 day for other major peaks. Jenny Lake Campground is the logical outfitting point for most expeditions. The majority of ascents require ice axes, rope, and hobbed boots or climbing shoes. Guided parties may arrange to rent equipment from the guide. Fishing Grand Teton National Park offers good opportunities for fishing. Fish may be taken with artificial lure during most of the summer and autumn. The lake or mackinaw trout in Jackson and Jenny Lakes can best be caught with heavy tackle by means of trolling.