Evolution of a small Eemian lake in a unique location on a kame hill: Haćki site, NE Poland

An Eemian lake in a unique location at the top of a kame hill was found in NE Poland. Results of pollen and microscopic plant remains analyses show that despite the unusual location, its development and terrestrialization were typical for small meso-/eutrophic lakes of the temperate zone. At the end of the interglacial period an overgrown basin was flooded with water and again transformed into a lake. It existed until the beginning of the Brørup interstadial, and then it was covered with diluvia and/or aeolian sediment and finally disappeared.