Lace up your boots and head into Colorado's rugged Sangre de Cristo Mountains to explore this spine of soaring peaks that stand more than a mile above the San Luis and Wet Mountain Valleys. Here you'll discover plunging creeks, gorges cut from chunky conglomerate, and valleys where elk, bighorn sheep, coyote, and cougar live. Climb Kit Carson Mountain, Crestone Needle, or Blanca Peak; hike Black Canyon or Wild Cherry Creek. Wander the Great Sand Dunes...