The vessel they found was originally purple in colour and marked with six simple Greek crosses. Their conclusion is that it was a Christian chalice! And what was it doing in southern Arabia?
This raises the possibility that Christian monks had set up a centre in what was once a frankincense trading post. “There is a chance that Ain Humran was the missing ‘third church’ founded by the Byzantine missionary Theophilus Indus in the middle 300s.” (Clapp, N. (1998). The road to Ubar : finding the Atlantis of the sands. Boston: Houghton Mifflin. p.212)"
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