The Grand canyon is one of the owrld's seven natural wonders. These include Mount Everest in Asia,the Great Barrier Reef in Australia and Victoria Falls in Africa. The Grand Canyon is a massive gorge. It is situated ib the US state of Arizona and the Colorado River runs through it. The river has created the gorge slowly over the past six million years. The canyon is 446 kilometres long and nearly 2 kilometres deep at some points.