Skiing The Backcountry on West Deloney Avenue is Jackson's premier resource for guided backcountry skiing and avalanche education, led by experienced mountain guides who know the terrain, the snowpack, and the risks of the Teton backcountry with the kind of intimacy that comes from skiing here for decades. Whether you're taking your first steps beyond the resort boundary or seeking a challenging high-route objective, their guides bring the knowledge and judgment to make it both safe and extraordinary.