1 Havasu Falls Arizona ThinkstockPhotos597218680.jpg

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The falls are especially popular with hikers. The blue green waterfalls in the Grand Canyon have a 100-foot chute flowing down red rock cliffs. You can get there either by a helicopter ride or by hiking for about 10 miles. The spectacular waterfalls and isolated community within the Havasupai Indian Reservation attract thousands of visitors each year, according to the NPS.