It stretches 100 miles and reaches depths of 500 metres, making it the largest canyon in Africa and the second largest in the world after the Grand Canyon of the USA. It is a popular tourist ...
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America's Largest Collection Of Rock Art Is A Canyon Wonderland Out West With Ancient MarvelsAmong the many canyons around the U.S., like this underrated Montana canyon in the Rockies or this ... a collection of petroglyphs that looks like a large group of bighorn sheep and hunters ...
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