Every two to three years

Welcome to the land of fire and ice. The earth{u2019}s tremendous forces have made Yellowstone and Grand Teton National Parks a volatile landscape. The parks bear the marks of ancient seas, volcanic heat, tectonic upthrusting, and ice scouring. Even today, they shake and roar. In Yellowstone National Park, rumblings of a supervolcano boil to the surface{u2014}spewing, spitting, oozing, and bubbling. Steam rolls from vividly colored pools, muddy cauldrons burp smelly gases, and blasts of hot water shoot high into the air. The cantankerous landscape gushes with spouters like iconic Old Faithful. In Grand Teton National Park, toothy spires claw the sky in one of the newest mountain ranges in the Rockies. Glaciers have chewed the terrain, leaving lakes, bowls, and canyons to explore. Towering thousands of feet high to culminate in the Grand Teton, mountains dwarf all that roams across the floor of Jackson Hole. Throughout the Greater Yellowstone area, sagebrush prairies make wildlife easy to spot. Bison, elk, antelope, wolves, and even grizzly bears enchant visitors. Blue-ribbon trout fishing streams, hiking trails, alpine lakes, bicycle paths, white-water rivers, and epic ski slopes all create a four-season recreation paradise to explore. The town of Jackson, which anchors the Jackson Hole valley, offers an urban base of operations for the region{u2019}s myriad recreational bounty.