Jackson Hole Mountain Resort In the untamed wilderness of the legendary Teton Mountains, vacationers find an exciting winter adventure at Jackson Hole Mountain Resort. The two splendid mountains of the resort offer 2,500 acres of wild beauty and a breathtaking 4,139-foot vertical drop. Jackson Hole is more than an ordinary winter resort. This area, first tracked in the 1800's, has been preserved from modern urbanization and is known as the Gateway to Yellowstone and Teton National Forests.