The document lists 6 of the natural wonders of the world: Mount Everest, the highest mountain in Nepal at 8,850 meters high; the River Nile, the longest river running through Egypt at 6,853 km, home to crocodiles, hippos, and dangerous fish; the Sahara Desert, the biggest and hottest desert spanning 9,200 sq km in North Africa and experiencing sand storms; Niagara Falls, the highest waterfalls between Canada and the US at 54m high and 950m wide; the Amazon Rainforest, the biggest rainforest covering 7,000 sq km in central and South America; and the Grand Canyon in Colorado, the deepest and widest canyon stretching 446km long and