The Dadès Gorge, with its high cliffs of limestone and weirdly shaped erosions, begins almost immediately north of Boumalne du Dadès. A mixture of modern houses and older ksour edge the road, with fields fronting gentle slopes at first but giving way to increasingly precipitous drop-offs as the road nears Msemrir. Most travellers get as far as Aït Oufi, 25km or so into the gorge, before turning back. It’s a fine day-trip, but it would be a shame not to explore the area further – pushing on, the gorge closes to its narrowest point just 9km further along, while a couple of days’ walking in and around the gorge from one of its many hotels will reward you with superb scenery, with plenty of kasbahs and pisé architecture to admire.