• Distance: Approx. 75 kilometres
• Duration: Four days, around four to six hours trekking per day
• Start: M’hamid
• End: M’hamid

Another intrepid trek I can recommend is to Erg Zahar. Dubbed the ‘screaming dunes’ after a grisly local legend, they’re even more remote than Erg Chigaga. It’s a four-day trek on foot with wild camping around a variety of desert landscapes. The circular route to the rolling dunes starts from M’hamid, following the Draa River, passing through a lush palm oasis dotted with crumbling mud-brick buildings, crossing stony hamada and the river bed, where there’s a surprising variety of desert vegetation, thanks to an underground water source.