The Cloppenburg Geest is a geest region near the town of Cloppenburg in North Germany and the centre of the Saalian glaciation Upper Pleistocene terrain of the Ems-Hunte Geest region. The meltwater sands (Schmelzwassersande) of the advancing ice sheet covered the old terrain with outwash sands (Vorschüttsande). Woldstedt spoke about underlying sands that, in the "Cloppenburg-Bassum Geest", belonged to the Elster glaciation. A covering of boulder clay was deposited over the outwash sands during the Saale glaciation, or more precisely the Drenthe stage.