Results of geologic tests released on January 9, 2007, by British businessman Robert Bittlestone, Cambridge classicist James Diggle, and University of Edinburgh geologist John Underhill suggest further evidence to support the hypothesis that Homer’s Ithaca can be found on western Kefalonia as reported in the January 2007 issue of „Geotimes“, published by the American Geological Institute (AGI). This hypothesis suggests that the western peninsula of the modern-day Greek island Kefalonia, called Paliki, was a separate island 3.000 years ago. Landslides and rockfalls from earthquakes filled in the valley between Kefalonia and Paliki, thus disguising the ancient landscape that was described by Homer in the Odyssey.
http://www.geotimes.org/jan07/WebExtra010907.html