Merzouga is a village in the southeast of morocco , and built near the largest ''erg'' (sand dune), 50 km long (North/South) by 5 km wide swathe of sand that reaches a height of 350 m. As a result of these dunes, the village has developed into a popular tourist destination. The local population is Arabs,blacks and Berber,very hospitable people who make visitors feel very welcome. http://wikitravel.org/en/Merzouga