From their website:
>“There is no Jewish tradition of the geographical location of Mt. Sinai; it seems that its location was obscure already in the time of the monarchy,” it reads.[1]
>For example, one Rabbi recently published a book titled “Searching for Sinai.” Rabbi Alexander Hool believes that Mount Sinai is in Saudi Arabia, and not in Egypt’s Sinai Peninsula as is usually believed.
>Sinai in Arabia is a project of the Doubting Thomas Research Foundation, a 501(c)(3) non-profit dedicated to investigating the historicity of the Exodus, including documenting the theories about the location of Mount Sinai, and researching possible reconciliations of the Biblical account with modern understandings of history and science. It is not a proselytizing organization.
>[1] The Jewish Encyclopedia, Vol. 14, p. 1599.