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Caption	Architect Hugh Barnes explaining the features and chronology of the east wall of the mosque at its northeast corner (November 2010), describing wall construction on Roman-period paving, the crafting and coursing of stone blocks, the use of recycled material (“spolia”), and minaret additions (left, head height). The area around the wall, minaret, and part the mosque courtyard was excavated by the Yale Joint Mission (1929-34), with a focus on architecture. The “well-built Arab edifice” partially exposed was seen as “perhaps … a guard house”
Credit	Alan Walmsley