The transportation (known as hauling or skidding) of trees from site where they are felled to a site where they can be processed. Before mechanisation, this was always done with horses, and these days horses are still used in many parts of the world as they are well suited to working in selectively logged woods or in hilly terrain unsuited to large machinery. In some countries, timber hauling is a competitive discipline with the weight of timber and distance dragged being evaluated.