• Start altitude : 1090m
• Top altitude : 2004m
• Total climb difference: 920m
• Outing's main aspect : W
• GPS : 46.003651, 6.32555
• Map : 3430ET,

External sources:

• http://www.camptocamp.org/routes/45863/fr/montagne-de-sous-dine-par-le-trou-de-la-pierre

• DVA + Snow Shovel + avalanche probe
• Warm hat, scarf, sweater, hooded anorak, waterresistant clothing (windbreaker, balaclava), warm gloves, ski pants, gaiters, warm socks, helmet
• Ski touring Shoes
• Skis with touring bindings (downhill and free-heel), poles with wide baskets and climbing skins (coated with glue), Ski crampons.
• Backpack with front strap for skis
• Sunglasses with protective lenses, sunscreen lotion, lip balm, snow mask
• Wax, space blanket, whistle
• Waterflask, Thermos bottle, pocket knife, toilet paper
• First aid kit (elasticated support bandage, adhesive tape, bandages, gauze swabs, aspirine or paracetamol,safety pins, Arnica 9CH pills, etc. )
• I.D. card or passport (you need one for passing borders…)
• Mobile phone (switched on but on silence mode), GPS if you have one