For almost three thousand years Tjernagelshaugen (the Tjernagel cairn) has lain as a landmark at the Bømlo fjord. The poet Torarin mentions the cairn in his account of Knut the Mighty, who in the year of 1028 sailed from Denmark to Nidaros: “And in front of the old cairn at Tjernagel sailed soldiers sharp with peace”.
The prehistoric site at Årbakkasanden with menhirs and burial mounds has been visited, described and illustrated by many learned researchers through the last 350 years. All the same, we still know very little of this unique cultural monument.
The Ådland house is one of the biggest medieval houses still existing in West Norway. It is constructed from unusually large, hard fir wood, beautifully oval-cut. One story links the cottage to the Gildeskålbakken at Orninggård (Lower Ådland); thus indicating that the cottage has been the medieval banqueting hall. The building has been dated back to the 13-1400s by carbon dating.