New Mexico Bristlecone pines outline red sand cliffs outlined by cloudy blue skies near Taos, New Mexico.Dunes in Colorado's Great Sand Dunes National Park seem like sand castles rising to the cloudy blue sky.North of Monument Valley, Utah, Valley of the Gods' tall, reddish brown mesas, buttes, towers and mushroom rocks are remnants of an ancient landscape.Dunes swirl into the blue sky and dark clouds at Great Sand Dunes National Park, Colorado.Great Sand Dunes National Park, Colorado.Reddish brown buttes, framed by cloudy blue skies, stand tall near Sedona, Arizona.Desert GraceEarly morning shadows are seen against the buttes of Monument Valley, Utah during an early morning sandstorm.