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Ølve- Mining
All in all there are ten known copper mines and two iron mines on the Ølve peninsula. Geologically, the nine mines on Varaldsøy Island also should be figured in. The industry began at Lilledal in 1642 wth the mining of iron ore. From Jernsmauget by Dyråsen, the iron ore was sent to the iron works in eastern Norway.
Årsand
Below a south facing, steep rock at Årsand, there is one of the strangest ancient relics in the whole of Hordaland. The jutting rock wall forms a shallow flagstone – Geithilderen. Parts of the rock wall are covered by a light lime crust and on the crust figures have been painted in golden and rusty red colours.
Siggjo
Siggjo is a cone-shaped, volcano-like mountaintop in the part of Hordaland where one finds the best preserved volcanic rocks. The rock types originate from one or several volcanoes that spewed out glowing lava and ash. But, the shape of the mountain, as it appears today, formed later and by completely different forces.
Urangsvågen-Rubbestadneset
In 1868 the first stone workers came to Rubbestadneset to take out the granite for the Skoltegrunns Pier, predecessor of the Skoltegrunns wharf in Bergen. Later granite was also taken out from the area, around Innværs Fjord and UransvågenN. The activity probably peaked around 1900, with over 40 men at work. 15 years later, it was finished.
Helgaberget
Helgaberget – the holy hill – is a little rocky crag which thrusts itself a few metres above the terraced surface of Støle. The surface of the rock is strewn with figures inscribed in the rock and it was, as far as one can judge, a cult centre in the Bronze Ages. The name could indicate that the tradition of holiness can have lasted for almost 3,000 years.
Finnås
At Flintaneset by Finnåsvika, in the centre of the municipality, we find the most beautiful and best preserved igneous rocks in western Norway. We must go to Hawaii or Island to find as fine structures as at Bømlo.