We hiked to the prehistoric Nankoweap Granaries (1 mile round trip with 700-foot gain) from Main Nankoweap Camp at Colorado River Mile 53.4 for this view of Marble Canyon. In 1960, archaeologist Douglas W. Schwartz found corncobs, a pumpkin shell, and pumpkin seeds inside the granaries, evidently harvested from Nankoweap Creek Delta by Ancestral Puebloans between AD 1050 and 1150. This image is from Day 3 of 16 days boating 226 miles down the Colorado River in Grand Canyon National Park, Arizona, USA.
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