Kongsberg Silver Mines
The silver mines of Kongsberg, in Buskerud county in Norway, constitute the largest mining field in Norway, with over 80 different mines. It was the largest pre-industrial working place in Norway, with over 4,000 workers at its peak in the 1770s and supplied over 10% of the gross national product of the Danish–Norwegian union during its 335-year-long history: over 450,000 man-years were expended in the production.
Vestfold
Mølen in Larvik is home to Norway's largest stone beach and is an ancient burial site consisting of 230 cairns, some exceeding in diameter. Excavations have dated the rock piles to about 250 A.D. It was the first UNESCO Global Geopark in the Nordics when established in 2008. Mølen is one of Larvik's most popular tourist attractions. It is home to over a hundred species of rock, including Norway's national stone, "Larvikite", which is named from the area. It is a crucially important seabird habitat, where over 316 species of bird have been recorded.