North of Ixtapa, Hwy-200 follows the coast for 100km or so before crossing the Guerrero border into Michoacán state and the industrial city of Lázaro Cárdenas. From here the highway continues for another 260km through a wilder, virtually uninhabited area: there are fabulous beaches, but for the most part the mountains of the Sierra de Coalcomán drop straight into the ocean – it’s the most spectacular, best preserved and least developed section of the Pacific coast. You’ll make the most of this region if you have your own transport, though experienced hikers often camp and walk large sections of the coast. If you do travel by bus, sit at the front and prepare for some severe hairpin bends. In all cases, avoid travel at night.