Mølen is a coastal geopark in the Brunlanes area of Larvik Municipality in Vestfold county, Norway. The park is Norway's largest beach made up of rolling stones. It is a part of Vestfoldraet, the terrain left behind after the end of the most recent ice age around 10,000 years ago. Mølen is one of Larvik's most popular tourist attractions. It is home to over a hundred types of rock, including Norway's national stone, Larvikite, which is named from the area.