The petroglyphs at Haugen is located between Sandefjord and Larvik. The site features spiral figures, and some of them resemble humanoid forms with heads, horns/antennae and feet. The petroglyphs are dated to the Nordic Bronze Age (~1500-500 BCE).
The figures were once painted for visibility, but this is no longer done because painting petroglyphs can damage them. I addition, the petroglyphs at Haugen also suffered damage from lichen and moss growth and had to go through a cleaning process around 2010. As a result, the petroglyphs are now difficult to discern with the naked eye.