Amid lava fields and lizards: a walking trip on El Hierro, Canaries

Before Columbus, the island of El Hierro was the ‘edge of the world’. Today, its volcanic peaks and forest offer superb family trekkingClouds of volcanic dust envelop the car as we judder down the track through the Malpaís – the badlands. Contorted lava fields and cinder cones surround us in a fierce display. This was once believed to be the end of the Earth. Before Columbus voyaged to America, El Hierro – the smallest and least-visited of the Canary Islands &ndash