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Royal Gorge

(Encyclopedia) Royal Gorge, 10 mi (16 km) long, narrow canyon cut by the Arkansas River, S central Colo., often called the Grand Canyon of the Arkansas. The gorge was discovered in 1806 by an…

Geology of the Grand Canyon: De Motte Park.

DE MOTTE PARK.Its length is about ten miles, its average width about two miles. It is a depressed area in the heart of the plateau and is on every side girt about by more elevated ground…