I am crossing one of the world's major rivers on a delicate suspension bridge. To get here, I have walked some eight miles down the Bright Angel Trail, dropping 4,500 feet, and enjoying some of the world's most famous and spectacular scenery. Five microclimates separate me from the tops of the nearest mountains, and towering above are intricate cliff formations in varying shades of reds, pinks, yellows and whites, which attract millions of tourists every year. Where am I?
The first reader to guess where Susan Young is wins a copy of Children Just Like Me by Anabel and Barnabas Kindersley. Please send answers on a postcard to Where Am I? The TES, Admiral House, 66-68 East Smithfield, London E1 9XY
Iona Becket of Glasgow wins last week's prize with her answer of Hong Kong