The best known inscriptions are rock inscriptions on mountains, Dr. Sulaiman Al-Thiaeb, professor of ancient Arabic writings and cultural consultant at the King Faisal Center for Research and Islamic Studies said.There is an impressive variety of inscriptions. Many are in various dialects of Old Arabian, many are in Aramaic or Nabatean (Nabataean), and there are some in Palmyrene Aramaic, Hebrew, Latin, Greek, Egyptian (Coptic?), and Babylonian cuneiform. If you would like to look at some of them, see the link here. And just keep following the links there for more on Arabian, Aramaic, Natabean, etc. inscriptions in Saudia Arabia and ancient Arabia more generally
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