The Ahrensburgian area also included vast stretches of land now at the bottom of the North and Baltic Sea, since during the Younger Dryas the coastline took a much more northern course than today.

Northward migrations coincided with the warm Bølling and Allerød events, but much of northern Eurasia remained inhabited during the Younger Dryas.

During the holocene climatic optimum, the increased biomass led to a marked intensification in foraging by all groups, the development of inter-group contacts, and ultimately, the initiation of agriculture.

Palynological results demonstrate a close connection between the prominent temperature rise at the beginning of the Interstadial and the expansion of the hunter-gatherers into the northern Lowlands.

Today it is commonly accepted that the Hamburgian, featured by "Shouldered Point" lithics, is a techno-complex closely related to the Creswellian and rooted in the Magdalenian[citation needed].

Bromme culture sites are found in the entire southern and southeastern Baltic, and are dated to the second half of Allerød and the early cold Dryas III period.

The "classical" Brommian complex is typified by simple and fast, but uneconomical, flint processing using unipolar (single-platform) cores.

[5] Some recent finds, such as the Hintersee 24 site in southern Landkreis Vorpommern-Greifswald, would contribute to the argument of an early Ahrensburgian in northern Germany.

[7] This corresponds with the notion that "tanged point cultures" such as "Brommian" or "Bromme-Lyngby" appear to be based on the Magdalenian, during the Allerød and were closely associated with reindeer hunting.

The earliest reliable traces of habitation in the northern territories of Norway and western Sweden date to the transition period from the Younger Dryas to the Preboreal.

More favourable living conditions, and past experience gained through seasonal rounds, prompted increased maritime resource exploitation in the northern territories.