Timbuktu in 1893, a situation that lasted until it became part of the current Republic of Mali in 1960. Presently, Timbuktu is impoverished and suffers from desertification. In its Golden Age, the town's numerous Islamic scholars and extensive trading network made possible an important book trade: together with the campuses of the Sankore Madrasah, an Islamic university, this established Timbuktu as a scholarly centre in Africa. Several notable historic writers, such as Shabeni and Leo Africanus, have described Timbuktu. These stories fuelled speculation in Europe, where the city's reputation shifted from being extremely rich to being mysterious. Over the centuries, the
Timbuktu has been dubbed the 'Harmattan Haze'. Additionally, when the dust settles in the city, sand builds up and desertification looms. The wealth and very existence of Timbuktu depended on its position as the southern terminus of an important trans-Saharan trade route; nowadays, the only goods that are routinely transported across the desert are slabs of rock salt brought from the Taoudenni mining centre in the central Sahara north of Timbuktu. Until the second half of the 20th century most of the slabs were transported by large salt caravans or azalai, one leaving Timbuktu in early November and the other in