There is still a lot of ore in the abandoned mines on Varaldsøy Island. If today's prices and availability of ore continue, it is doubtful whether the mines will resume operation. But, the pyrite is there, if the market should return. On Varaldsøy Island one finds at least nine mines and prospect pits, that for the most part date back to the latter part of the 1800s.
At the bottom of the Osa fjord there is a cultural landscape marked by great contrasts; the wide terraces and the river delta at the fjord contrast with the steep hillsides in the background, where Norddalen leads up to the mountain. There are two farms here. Osa and Sævartveit – the farm at the river mouth and the hollow by the sea.
Road cuts and blast areas are a joy to rock collectors, even if the disturbance to nature is ever so disfiguring. These are the best kinds of places to hunt for crystals, which otherwise are removed by weather and wind. In the Ågotnes area there are especially many beautiful crystals to be found.
There is no place in Hordaland where there are so many over-wintering song swans as in Tjeldstømarka. And there are few places in the county that have had this birdfowl as a guest for as long.