One question I have always been curious about: where does Twain come up with his famous "Sand Belt," where Hank Morgan has it out with the Arthurian knights? Is there such a local in England Twain may have visited? Are there sandy areas in the interior of England close to caves? For that matter are there caves in southern England? Can anyone help with any criticism of the sand belt? I do not believe there is a reference in the California/Iowa edition of Yankee. Even guesses would be helpful and interesting here. Yours, Michael O'Conner