It confirms that the succession of cultures in this area (Kunda, Narva, Corded Ware) preferred settlement locations that were quite different. In fact, it could be inferred that the changing landscape of the Baltic attracted different cultural life-ways at different times.
|Wild Cabbage (Brassica Oleracea) by the Sea (Microfarmgardens)|
Narva folk may have been attracted to the changing landscape that created large brackish lagoons. Their point-based pottery is a low-fire, heat tolerant pottery that likely cooked seafood and pork fat in. Their diet seems to have consisted more of sea critters and pork. Some temporary settlements on open shorelines suggests they periodically went out to sea to club baby seals to death.
There is a question as to the purpose of their point-based pottery, but it probably relates to seafood preparation or how it was set in the campfire. Also, if the pottery was used for fermenting fish and cabbage, or alcohols, then maybe it is possible that point-based pottery is advantageous for concentrating the surface area of the trub? The kinds of fatty, brackish water fish fished out of the lagoons and deltas may have needed preservation by fermentation, such as modern surströmming, since many of these fish are not well suited for drying or smoking preservation.
The Narva Culture is joined, rather than directly superseded, by the Corded Ware culture that preferred the fertile river bottoms created by the lower water levels, such as in graphic D of Northeast Estonia. The fertile grassland would be readily tillable and very suitable for cattle.
It's interesting that modern Baltic cuisine, fish, krauts, pork is basically unchanged for so long. Also, it may be possible to overlay genetic results to see how different peoples migrate to familiar biomes.
GIS-based palaeogeographical reconstructions of the Baltic Sea shores in Estonia and adjoining areas during the Stone Age. Merle Muru (2017) DISSERTATIONES GEOGRAPHICAE UNIVERSITATIS TARTUENSIS [Link]