De Scheeken, a wet poplar forest on the borders of the municipalities Boxtel and Best (province of Noord-Brabant, the Netherlands) in the ‘National landscape’ Het Groene Woud is described as the author’s favourite place to study terrestrial and freshwater molluscs. In this small area of approximately 2.5 square kilometres, 68 species were found. Ten of these species are on the Dutch Red list. This high biodiversity with species like Eucobresia diaphana can be explained by calcareous seepage and variation in the landscape. Zonitoides excavatus was found in a part of the forest with a lower level of calcium.