There are three so-called passage graves lying only a couple of hundred meters from the hamlet Mysinge. A passage grave is a grave that is built of enormous stone blocks and surrounded by a cairn. The passage graves in Mysinge lie on the land ridge with openings facing southwest. The grave that has been described here has been excavated several times. It has been established that at least 30-40 persons were buried in the tomb, possibly as many as 70 persons.
Within the tomb there were remains from the greater part of the late Stone Age. It was found that the tomb was used in three different periods, the latest of which being the early Bronze Age. The oldest burial to have taken place is thought to have been in circa 3500 B.C., which makes the tomb the oldest passage grave to have been found in Scandinavia. The other two passage graves have not been excavated, but it would not be surprising if they were from the same period. The passage has 5 stones on each side and opens up to a chamber of 9 stone blocks. The roof of the chamber is made of 3 larger stone blocks with the flat side of the stones always turned inward toward the tomb.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.