This report summarises the work of the third season of the Fezzan project which took place in January 1999. The main environmental findings of the project team of specialist geographers are providing confirmation of dramatic climatic and environmental change over the last 100,000 years and give more precise dates for some of these changes. The excavations in Old Germa (ancient Garama) have continued through Islamic levels, with elements of five main phases of buildings now having been recorded. Additional standing structures, including one of Germa's main mosques, have been surveyed. Field survey around Germa has revealed further new settlement sites of prehistoric, Garamantian and Islamic date. Of particular importance is a series of lithic and pottery scatters relating to neolithic occupation along the edge of the Ubari Sand Sea, to the north of Germa. Further investigation of the irrigation channels (foggaras) has revealed significant new information about their size, construction and probable date. The report concludes with a brief preliminary analysis of changing settlement patterns over time.