 Working on the assumption that the discoveries at the Acheron could challenge the traditional assumptions about the "Odyssey"'s geography, Tim Severin sailed a replica Greek sailing vessel (originally built for his attempt to retrace the steps of Jason and the Argonauts) along the "natural" route from Troy to Ithaca, following the sailing directions that could be teased out of the "Odyssey".Along the way he found locations at the natural turning and dislocation points which, he claimed, agreed with the text much more closely than the usual identifications.However, he also came to the conclusion that the sequence of adventures from Circe onwards derived from a separate itinerary to the sequence that ended with the Laestrygonians and was possibly derived from the stories of the Argonauts.