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Keywords:AZRA, Arizona, Arizona Raft Adventures, Cambrian Period, Canon Cameras, Colorado River, Endagered, Endangered River, Golden Columbine (Aquilegia chrysantha), Grand Canyon, Grand Canyon Naitonal Park, Grand Canyon National Park, Grand Canyon Raqfting, Matkatamiba Canyon, Muav Limestone, Photo Expoedition, Photography Expedition, Ralph Lee Hopkins, Sedimentary Rock, adventure, white water rafting
