Erg (landform) and western Asia, and Central Australia. In South America, ergs are limited by the Andes Mountains, but they do contain extremely large dunes in coastal Peru and northwestern Argentina. They are also found in several parts of the northeast coast of Brazil. The only active erg in North America is in the Gran Desierto de Altar () that extends from the Sonoran Desert in the northwestern Mexican state of Sonora to the Yuma Desert of Arizona and the Algodones Dunes of southeastern California. An erg that has been fixed by vegetation forms the Nebraska Sandhills (). Sand seas and dune
What Love Is Made Of number six. In Belgium, on the Ultratip Flanders chart, it charted at the runner-up position, while on the Scotland singles chart, its peak was at number 33. Directed by Emil Nava, the official music video for "What Love Is Made Of" was released on 29 May 2013. According to Michael Depland from MTV Buzzworthy, the visual takes inspiration from the American action film series The Fast and the Furious, as it delves into "the world of underground of street racing". A behind-the-scenes video for it was released on 14 June 2013. The video begins with a closeup shot of Katy's