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Title
Steep Walls Of Grand Canyon of Yellowstone Formed By Yellowstone River #
Description
Steep walls of the canyon formed by the Yellowstone River, with its magnificent Upper, Lower & Crystal Falls. The Grand Canyon of the Yellowstone is the most breathtaking sight inside Yellowstone Park. Twenty miles long, the canyon is up to 4, 000-feet wide and 1, 200-feet deep in places. Mineral stains mark the locations of hot springs and steam vents in the canyon walls, turning them yellow, red, white, and pink. Most of the yellows in the canyon are the result of iron present in the rock as rust.