In gravel-pits along the shore of the Eckernförder Bucht collectors are able to find a fine banded flint. The colours are mostly greyish, very rare are brownish tones.

Similar in structure is the polish flint from Sandomierz.

More informations about the locality and the formation of this material are given under www.flintsource.net and at www.krzemien-sandomierz.pl