Single location in the municipality of Hattenheim in the German Rheingau wine growing region. It was first mentioned in the 14th century with "Hasele", which refers to the hazelnut bush. In the 19th century the name "Hasselt" was in common use. The south-west-facing vineyards at an altitude of 100 metres above sea level with a slope gradient of 20 to 25% comprise 33 hectares of vineyards on deep loess and loamy soils. They are sheltered from the wind and have a special heat retention capacity and good water storage capacity. The Riesling variety in particular is cultivated here. The Barth Norbert, Erbslöh, Georg Müller Stiftung and Kaufmann Urban wineries, for example, have shares in the site.