La Sergenté is a Neolithic (4500 - 3250BC) passage grave leading into a circular chamber of diameter of 3.3m. The chamber walls are of dry stone construction and stand to a height of 75cm but originally would have risen to about 1.5m forming a vaulted roof. The fallen remains of this roof were found during excavtion in 1923. The chamber was paved with flat granite slabs except for a small partitioned off area on the west side.Parts of four, round bottomed, early Neolithic bowls, a few flint chips and fragments of charcoal were recovered during excavation. Though the style is unique to the Channel Islands this simple tomb is very similar to examples found in Brittany and Normandy.References:
Frösöstenen is the northern-most raised runestone in the world and Jämtland's only runestone. It originally stood at the tip of ferry terminal on the sound between the island of Frösön and Östersund. The stone dates to between 1030 and 1050. It has now been relocated to the lawn in front of the local county seat due to the construction of a new bridge, between 1969 and 1971, on the original site.
Frösö runestone inscription means: Austmaðr, Guðfastr's son, had this stone raised and this bridge built and Christianized Jämtland. Ásbjörn built the bridge. Trjónn and Steinn carved these runes.