Mindel-Riss interglacial

The Holstein interglacial (German: Holstein-Warmzeit or Holstein-Interglazial), also called the Mindel-Riss interglacial (Mindel-Riß-Interglazial) in the Alpine region, is the third to last major interglacial before the Holocene, the present warm period. It lasted from about 340,000 to 325,000 years ago, and is hence part of the .

The Holstein interglacial is defined by marine sedimentation. On the stratigraphic record at the natural monument of Sievertsche Tongrube in Hamburg-Hummelsbüttel, its development is traced from the Elster ice age (Lauenburg clay) through the start of the warm period (freshwater depositions) to its flooding by the Holstein Sea (Cardien Sands).

...
Wikipedia