He found an artifact.

He did not know exactly what to do with it, but he did not throw it away or ignore it.

He brought it to the attention of archaeologists, and eventually — eight years later — Vladimir Pitulko came to look.

The lesson is one that recurs throughout the history of archaeological discovery: the absence of known sites in a region does not mean the region was uninhabited.

It means the region has not been adequately surveyed by people looking for the right things.