Larvik the river Numedalslågen, locally called "Lågen", which terminates in Larvik, east of the town. Other bodies of water include the lakes Farris, Goksjø and Hallevatnet. Larvik is also noted for its natural springs of mineral water, "Farriskildene", which have been commercially exploited under the brand name "Farris". At Kaupang in Tjølling lies the remains of the medieval Skiringssal trading outpost. Larvik is also home to the world's northernmost natural occurrence of "Fagus sylvatica" forests (European Beech tree), known as "Bøkeskogen" ("The Birch Tree Forest"). Larvik Municipality is home to one city and 7 villages: Himberg is an exclave which is
Nyssa sylvatica wear and some acids has led to its use as factory flooring. Nyssa sylvatica Nyssa sylvatica, commonly known as Tupelo, Black gum, sour gum, is a medium-sized deciduous tree native to eastern North America from the coastal Northeast USA and southern Ontario south to central Florida and eastern Texas, as well as Mexico. "Nyssa sylvatica"'s genus name "(Nyssa)" refers to a Greek water nymph; the species epithet "sylvatica" refers to its woodland habitat. The species' common name tupelo is of Native American origin, coming from the Creek words "ito" ‘tree’ and "opilwa" ‘swamp’; it was in use by the mid-18th