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Blomvågen
"One of the big scientific sensations", was the title in the Bergens Times newspaper on the 22nd of November, 1941. It was the geologist Isal Undås who had been interviewed by the newspaper. He thought that he had discovered a 120 000 year old whale bone, remains of life from before the last Ice Age.
Dale farm
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.
Dale power station
In 1923 Bergenshalvøens Kommunale Kraftselskap (BKK) expropriated large areas for power plants and development of hydropower started soon afterwards. Dale power station with the two first aggregates, each of 14 MW was put into operation on 17 November 1927. In the supply reservoir in Storefossen 5152 cubic metres of concrete were cast, and a modern and well-equipped power station was built.
Eksingedalen- hydropower development
Water discharge at the outlet of the Ekso into Eidsfjord was halved after the big hydropower development in the mountainous area between Modalen and Eksingedalen and further southward toward Evanger in the 1960s, 70s and 80s. In an attempt to amend the changed environmental conditions in the waterway the developer built 35 small dams in the river.
Gåssand
The 28th November 1914 was a day to remember for the Os inhabitants. This was the day they could turn the switch on the wall and have electric light in their houses. It was like opening the door on the future when the power station at Gåssand was put into operation.