The Saudi government seems to have ambitious tourism plans for these sites, most of which are pre-Islamic. A decade ago I was concerned about some of what I was hearing about them. But these developments sound positive.
Other PaleoJudaica posts on Hegra (Madain Saleh), "Saudi Arabia's answer to Petra," are here, here, here, and here.
And, more generally, for Nabatean, Aramaic, and old Arabian dialects in Arabia, see here and links.
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