After a chilling, snowy and awesome stay in Gunnison, CO, we've now headed southeast to the Great Sand Dunes National Park. It got down to -40 degrees!
Huge dunes rise on the horizon, some as tall as 750 feet. Frozen right now, they've taken on strange shapes, carved by the wind, snow and ice.
When lightning storms build up in this area, forks of lightning strike the sand, creating tubes of fused sand called "fulgurites."
Above the dunes looms the snowy range of the Sangre de Cristo Mountains, which house lush alpine meadows and forests.














A storm rolled in as we left, the clouds lit up by the setting sun.