Holmengrå is the only place in Hordaland where we find traces of the abrasion that is supposed to have transformed Western Norway from a Himalaya-like high mountain landscape during the earth's Paleozoic Era, to a flat lowlands terrain during the Mezosoic Era. Just 400 million years ago, large and small stones plummeted down from the high mountains. Some of these stones became incorporated into the conglomerate bedrock on Holmengrå.
Lurekalven is an unpopulated island of heather moor which is a part of the wilderness belonging to the five farms on Ytre Lygra. Between the two islands there is only a small sound. As late as the 1920s, milking cows were rowed over the sound from Lygra in summer – a form of farming that was adapted to the coastal landscape.
Sæheim (Seim) at Lygrefjord is mentioned as one of the royal farms of Harald Hårfagre. Several of the first Norwegian national kings had their seat here, and the farm became Crown Property up to the 1400s. According to the sagas, Håkon den gode is buried on the farm.
On a large gravel terrace in Matredalen (the Matre valley), a couple of kilometres from the coastal settlement Matre, lies Storseterhilleren, at the end of a large stone block that came rushing down from the mountain. The Matre river runs just over 100 metres to the east of the cave.
The Dale farm lies well situated on the gravel by the river, below the mountain Beitelen. But a few stone throws further north, on the wide expanse behind the houses, there has been an older farmstead. Here there have been found a number of cooking hollows, pole holes, an old road and traces of something believed to have been a palisade. Finds from this oldest farmstead may be dated to the time of the migrations, 400-600 years A.D.