Ages ago, in my youth, maybe childhood (?) Reader's Digest had an article about someone searching for Mt Sinai, he came up with a candidate, but alas, I don't know what it was. I think Berosus knows, I'm pretty sure I asked him this before, 15-20 years ago. [blush]
It was Sinn Bishr in the Sinai peninsula, a few miles north of the traditional mountain. I wrote about it here, and included a scan of the Reader’s Digest map: http://xenohistorian.faithweb.com/holybook/articles/Moses.html#MtSinai