Hey thanks for the update. Great pics.
I visited Sümela Monastery early 94 and I'm happy to see from your pictures that the older frescos are now being revealed by the archeologists.
Usually the Byzantine era icons are unfortunately defaced. (Because drawing faces are considered idolizing by Muslim traditions) The older ones behind the newer ones still have the faces since they were never visible (thus never defaced)
Great trip and report. Please keep it coming!