The Fezzan Project is investigating the last 10,000 years of human settlement, landscape evolution and climatic change in the Germa region in southern Libya. The second season in February–March 1998 comprised interdisciplinary research in archaeology and geography, centred around excavation and survey work carried out at the site of Old Germa. To date, three phases of mud brick buildings have been partially explored. In addition, wider geomorphological study and archaeological survey and fieldwalking were carried out elsewhere in the Germa/Twesh oasis and around el-Hatiya. Numerous sites were discovered, including a new hillfort of Zinchecra type and several valley centre ‘villages’ of Garamantian/Roman date. Artefactual studies were carried out on pottery and lithics, animal bones and seeds. Further work on the subterranean irrigation features, the foggaras, have confirmed their pre-Islamic origins.