Passage: Located on the Atlantic coast of the Sahara Desert, it lies on the west coast of Africa. With the exception of Friendship Port and a small fishing port, the coastal strip is mostly left empty and allowed to flood. The coastline includes shifting sandbanks and sandy beaches. There are areas of quicksand close to the harbour. Nouakchott is largely flat and only a few meters above sea level. It is threatened by the sand dunes advancing from its eastern side which pose a daily problem. There have been efforts to save particular areas, including work by Jean Meunier. Owing to the rapid build-up, the city is quite spread out, with few tall buildings. Most buildings are one-story.Nouakchott is built around a large tree-lined street, Avenue Gamal Abdel Nasser, which runs northeast through the city centre from the airport. It divides the city into two, with the residential areas in the north and the medina quarter, along with the kebbe, a shanty town formed due to the displacement of people from other areas by the desert. Other major streets are named (in French) for notable Mauritanian or international figures of the 1960s: Avenue Abdel Nasser, Avenue Charles de Gaulle, Avenue Kennedy, and Avenue Lumumba, for example.The kebbe consists of cement buildings that are built overnight and made to look permanent to avoid destruction by the authorities. In 1999, it was estimated that more than half of the city's inhabitants lived in tents and shacks, which were used for residential as well as business purposes. The city is broken into nine arrondissements, sub-divided into alphabetised Îlots. These are Teyarett, Ksar, Tevragh Zeïna, Toujournine, Sebkha, El Mina, Dar Naïm, Arafat and Riad. The Sebkha (Cinquième) Arrondissement is home to a large shopping area.

Question: Where can you mind some shifting sandbanks like Friendship Port?
west coast of Africa