During the Early Holocene in southern Scandinavia sea levels were rising and large areas of the North Sea and the Baltic which had once been dry land were inundated and now lie beneath metres of cold waters.
Partly because of the growing exploitation of the continental shelves for resources including wind-farms, oil drilling and mining industries, this unique landscape is coming to light with the use of new technologies such as high resolution photogrammetric 3D-modelling and hydro acoustic mapping. This is allowing for remarkable visualisations of the submerged landscapes complete with sunken forests.