Don't be so dismissive; it goes even deeper:

A massive prehistoric settlement has been uncovered in the Ukraine consisting of a large temple, human-like figurines, and animal remains, which dates back to around 4,000 BCE.

Researchers have noted that there are indications that the inhabitants of these settlements would burn the entire village every 60 to 80 years and then build on top of the ruins. There is no explanation for this practice, but one location … has as many as thirteen levels of foundations that were built upon.

How do you know it wasn't the Russians what did it?