Mules, tools and old bricks: Rebuilding China's Great Wall

Nature, time, neglect and millions of footsteps have taken their toll on the Great Wall of China leaving much of it crumbling, but repairing it can be painstaking -- and controversial -- work. After public outcry when a 700-year-old section of the monument was 'fixed' by covering it with cement -- authorities insisted on more authentic restoration using traditional methods: so now labourers, aided by mules, use reclaimed stones and mortar.