Old Oswestry Hill Fort in Shropshire, England has been claimed as the Citadel of Atlantis by Henry B. Ambrose in his modestly titled book, I Found Atlantis. However, Ambrose fails to explain how the triremes, described by Plato, sailed up the slopes of the hill-fort from one encircling ‘canal’ to another at different levels without a lock system. Nor does he explain why this hill-fort is still high and dry while the Dialogues clearly describe the submergence of Atlantis.