Istrehågan

[4] Nearby Haugen farm in Sandefjord is home to Vestfold County's largest petroglyph site.

[5] The rock carvings at Haugen farm are Vestfold County's oldest ancient monument.

Archaeological excavations made in 1959-1961 uncovered remains of bones, bear claws, pottery shards, a brooch, and more.

There are marked hiking trails leading to Istrehågan through the Marum forest, for example from Store Bergan skole.

A burial mound with large stone settings was put up here during the Great Migration over 1,500 years ago.

On a mountain facing east, 100 meters down the road to Haugen farm, 78 small and large petroglyphs have been discovered.

[17][18] The rock carvings were first described by S.A. Sørensen in his 1872 book Lidt om Sandeherred før i Tiden.