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Keywords:AZRA, Arizona, Arizona Raft Adventures, Canon Cameras, Colorado River, Common Chuckwalla (Sauromalus ater), Endagered, Endangered River, Grand Canyon, Grand Canyon Naitonal Park, Grand Canyon National Park, Grand Canyon Raqfting, Marble Canyon, North Canyon, Photo Expoedition, Photography Expedition, Ralph Lee Hopkins, River Mile 21, Sauromalus ater, adventure, white water rafting
