What kind of remains?

On the coast: ports with piers, cisterns, houses, tombs. They occupied key places after the Ptolemies on the maritime route to India, they had a guarisson at Farasan Isl too (the Pithon Stele).
We wrote an article published in 2007 and you will find some info about my new expedition project Red sea caves and cisterns at www.saudicaves.com
Best-Michel Pons.