Granvinsvassdraget

After the ice age, Granvin Fjord reached all the way up under Skjervsfjossen waterfall. Just a thousand years later, as a result of the rising of the land after the ice melted, this whole inner part of the fjord freed itself of the sea and became Granvinsvatnet lake. In spite of this rise in elevation, this waterway is still navigable for fish: Sea trout have wandered into Granvinsvatnet in more recent times and evolved to become freshwater trout. And salmon and sea trout made the journey 13 kilometres up the Storelvi river.

Hausberget

Seglberget

Skjervet- river theft

At the end of the last ice age the ice flowed out of Hardanger fjord in such a fury that it forced the meltwater from Voss to run back uphill toward Granvin. The glacier from Raundalen down the windy valley along the Vosso to Bolstadøyri went too slow to make the turn.

Lonelva

It is said that the salmon populations with the largest and the smallest salmon in the world both come from the waters that run out into the fjord system around Osterøy. Vosso is supposed to have the largest spawning salmon to be found in any river, whereas Lonelva is said to have the smallest.

Storavatnet- Red-throated diver

The troll-like sounds from the Red-throated diver carry long distances between the mountains around Storavatnet. The high-pitched, haunting screeches on quiet evenings in May are a sign that the mating season has begun.

Storavatnet- shoreline

The regulation of Lake Storavatnet has created a rare geological phenomenon: When Herlandsfossen power station taps the reservoir during the spring and summer, the old shoreline of hard bedrock comes into view.