In-Gall is intimately linked with the nearby salt industry at [[Teguidda-n-TessoumtTegguiada In Tessoum]], around 15 km to the north. Teguidda, on the site of an ancient lake bed, floods as water washes down from the [[Aïr Massif]] to the east each year, producing natural salt ponds. The population of In-Gall maintain and harvest from evaporation ponds here, sending labourers from the local clans to work the salt and transport it back to In-Gall at the end of the season. In-Gall is near enough that, unlike the oasis town of [[Fachi]] where plots are owned by [[Agadez]]-based Tuareg clans and worked by a permanent population, the workers at Teguidda return to In-Gall for the remainder of the year. Teguidda also lacks a stable oasis, which provides In-Gall with market gardens and date palm farming on a year-round basis. Prior to its decline in the 20th century — because of the smaller scale of the In-Gall salt markets as well as its easy access by road — In-Gall was once a destination of the [[Azalai]] salt caravans, in which Tuareg merchants transported salt from the markets here across the [[Sahel]] for agricultural and medicinal uses.
