National Park
Grand Canyon Natl. Park, Arizona, Parks & Rec., National
1.2 M.A./1,900 sq.mi. in NW. AZ. Millions of years geological history. World Heritage site & Wonder of World. Certified IDA Park
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Grand Canyon National Park (U.S. National Park Service)
https://www.nps.gov/grca/index.htm
BIGGER than Life/TV
http://www.pleacher.com/np/comx/comics3.html
Creation
http://www.pleacher.com/np/comx/comics5.html
Cliff Notes
http://www.pleacher.com/np/comx/comics14.html