At the bottom of Vargavågen on Halhjem lies Grødalshaug, a 30 metres high rocky outcrop between the bay and a moist valley cleft. On the south side of the rock is a steep rock cliff facing the valley, the bog and the stream. On this rock face we find rock carvings from the Bronze Age.
Steatite is a type of stone that is abundant in Hardanger. There are large steatite deposits in the mountain below Folgefonna. These deposits are visible both in Krossdalen in Jondal, at Kveitno in Odda and at Måge in Ullensvang. There are many traces of steatite quarrying in Hardanger, and one of the largest fields is in the hillside above Måge.
“On the country of Wallestrand…the rock almost everywhere appears to be of a slate-like substance, be it at the seashore, on the farms or in their distant fields”.
At nearly 1000 metres over sea level, on the north side of INGAHOGG mountain, the remains of a soapstone quarry have been discovered. It is said, according to the Sagas, that Inga collected the big soapstone that lies in front of the Åkra Church from here.
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.
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.