Thanx for correction, it seems I lost the "-"-key

Seriously: You are right, the most activities of AF are on Santorin (Thera) and in the Aegean Sea, in the Ukraina (former Barsaive), Bulgaria and other Black Sea coastal nations.
But no details are shown. Maybe it's up to our fantasy and knowledge about ED, what is to be discovered or dug up by a research/excavation.
Ancient artifacts - there are a lot of them waiting to be found. One we expect to recover next time. Hints to it are tracing back to the early 1980s, even Dark Angel shows some evidence for its existing, mostly not knowing it...
In the real world, there are a lot of famous and interesting prehistoric sites in this regions, from ice age to the middle ages; like Çatal Hüyük (Turkey), Eski-Kermen and Mangup Kale (Crimea), Kaali Crater (Estonia - we have already explored it and even found a few nuggets of orichalcum!), etc.