The Molli (German: Mecklenburgische Bäerbahn "Molli") short: (MBB) is a narrow-gauge steam-powered railway in Mecklenburg, running on 900 mm (2 ft 11½ in) gauge track. It operates between Bad Doberan, Heiligendamm and Kühlungsborn West over a total distance of 15.4 km with a running time of 40 minutes. Within Bad Doberan the line runs through the street, and later along a linden tree-lined avenue. Between Heiligendamm and Kühlungsborn the tracks run parallel to the Baltic Sea beach across fields.