Valchi Dol.
Valchi Dol is located at the watershed of the Dobruja, Varna and Shumen plateaux. Its name means "wolf's ravine" in Bulgarian, which is also reflected in its old Ottoman Turkish name, Kurtdere. Valchi Dol boasts the first diesel power plant among all villages in Bulgaria, installed in 1929. The village was proclaimed a town in 1974.