Early Christians hid inside these caves. They even raised animals in them and shit. Can you image? “Mom, why can’t we ever go outside?” “Because the Turks will kill us, dear. Now drink your yogurt and finish your homework in the dark.”
052-Kaymakli-Underground-City-cave-network
Oh God, My Wife Is German. 
Well dear, we were not there at the time of those killings. The Romans killed them relentlesly (then adopted their religion) We just began to killing before 1000 years ago.
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