 The Tawagalawa letter mentions that the Hittites and the Ahhiyawa fought a war over Wilusa.In November 2001, geologists John C. Kraft from the University of Delaware and John V. Luce from Trinity College, Dublin presented the results of investigations into the geology of the region that had started in 1977.The geologists compared the present geology with the landscapes and coastal features described in the "Iliad" and other classical sources, notably Strabo's "Geographia".