I've read somewhere that the traditional Mt. Sinai is misidentified and that the real location lies in land controlled by Saudi Arabia. Supposedly the description of the site in the Bible doesn't match the traditional Mt. Sinai but this other location does and has a great deal of archeological evidence but is controlled by Saudi military.
Not sure, but indeed a number of historic religious sites are in the hands of those who would rather keep them hidden, or out and out destroy them. Look at how they keep garbage in the caverns below Temple Mount...everyone loses at the hands of such ignorance.
There was a remarkable book written about this a decade ago called "The Gold of Exodus". The amateur archeologists claim to have found Mt. Sinai on the Arabian Peninsula, as well as secret Saudi missile facilities. Check Amazon for the book.