As there aren't any archaeology or anthropology stack exchanges, this seemed like the best place to ask.
What is this symbol and its history in the West? —Mangup-Kale, Crimea (Cross clearly added during a later period.)
The quite similar Sri Yantra hails from South Asia, but I'm unsure if they are connected. If so, was it distributed during Indo-European migrations or was it shared via trade routes during a later period?