A brief, ingeniously designed guide to trekking in the Sacred Valley from Cusco to Machu Picchu with color photographs, a fold-out map of the route, site diagram of Machu Pichu and a camp-to-camp overview of the Inca trail. The authors, both experienced trekkers, include detailed avice on preparing for the trip, and a good overview of the site itself. The step-by-step sections cover the Classic trail from Chilca/Km 82/Km 88, the shortest option from Km 104, and the 5-6 day, more strenuous Mollepata trek.  (AND33, $15.95)