In 1987 the find of a fully preserved boat was made at the site of Dufuna, between Potiskum and Gashua on the Komadugu Gana. The boat is stratified 5 m below clays and sands whose alternating sequence is evidence of deposition in standing and flowing water. The radiocarbon dates for the boat are: 7264 ± 55 bp (KN-4683) and 7670 ± 110 bp (KI-3587) (uncalibrated). This makes it the oldest known boat in Africa and one of the oldest in the world. Excavation is scheduled for April 1998. The conservation will be done in a museum recently built in Damaturu.