sentences:  To the south, Merzhausen borders the municipality of Au, which belongs to the administrative region of Hexental and to the west, the municipality of Ebringen.Merzhausen is the smallest municipality in the local area with the highest population density, which is also higher than that of Freiburg.Between Schönberg and the Black Forest, lying at the northernmost part of Hexental, Merzhausen belongs to both the so-called the foothill area as well as the Black Forest, which the main fault passes through the municipality between Oberrheingraben and the Black Forest.