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![The delta at the outflow of Storelvi in Granvinsvatnet.](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/gra_1.jpg?itok=er1kEGup)
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.
![Skjervet toward the east. Jørdre Farm up to the left.](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/gra_32.jpg?itok=HGK8HMBs)
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.
![The marine use environment on Krossøy, Austrheim](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/1/kvh_306-1.jpg?itok=G4q9_8h8)
Krossøy
Furthest north in the island community Rongevær, at the entrance to Fensfjorden, lies Krossøy. Belonging to the farm are the islands of Krossøy, Husøy, Kårøy, Lyngkjerringa, Søre Kjerringa, Rotøy and Kuhovet. All of them have been inhabited. On Krossøy itself today there are four holdings. The marine use environment here is one of the best preserved along the West Norwegian coast.
![Leirvågen](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/austr_10.jpg?itok=DGquSLwq)
Leirvågen
A marsh is a grassy meadow that is strongly influenced by salt from the sea. This type of nature is abundant in Denmark, among other places. The flatlands along the river that run out by Leirvågen, are the municipalities' largest marsh. At spring tide, these flatlands are flooded underwater for several hundred metres in over land.
![Lyngoksen](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/austr_16.jpg?itok=FU0ZNly2)
![View in over Mostraumen.](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/mo_16.jpg?itok=GnR34JLO)
Mostraumen
Until 1743 the people from Modal had to wait for a flood in MOSTRAUMEN before they could draw their boats up the river current, and then row back across Lake Movatnet. But, that year the flood opened a free passageway all the way to Mo. Hordaland had gained a new tidal waterway.
![Under the grass fields lie large quantities of sand and gravel.](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/mo_24.jpg?itok=e4ePAE19)
Nedre Helland- Sand Quarries
The three spades in the municipal coat of arms for Modalen are sand spades. Sand quarrying has brought income and employment. As much as 70,000-80,0000 tonnes of sand and gravel left the municipality each year since the turn of the millennium, to be used as cementing sand. Why is Modalen endowed with so much sand?
![Mo with the Otterstad farm in the background early in the 1900s.](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/1/kvh_329-1_0.jpg?itok=JUVMdLHq)
Otterstad
Tthe Otterstad farms lie in the innermost part of Mofjorden, on the northwest side of the river. The row of stave-built boatsheds that belong to the farm were probably constructed a little after the middle of the 1800s. Both here and on the Mo side, the boatsheds were important storage places at the seashore; wood and other farm products intended for the town; corn and merchandise in return.
![Toward Støle and Sørheim, 1920.](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/terassen.jpg?itok=1OuuZEj5)
The village of Etne
Much of the sand and gravel that the town of Etne is built on was laid down at the end of the Ice Age and is evidence of melting glaciers and roaring meltwater rivers. The uncompacted material in the big terraces leave their unmistakeable mark on the wide elongated valleys.
![Etne and the Etne delta around 1900.](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/etne_2.jpg?itok=bfLAQc7X)
Etnedeltaet
During the latter half of the 1900s the big natural river deltas on Westland disappeared. Until the 1980s there was still a small, but significant remnant of the original river delta from the Etneelva river, but today most of this, too, is industrial land.