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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.
![The contrast between phyllite and Precambrian basement is clearly visible at Lussand.](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/gra_27.jpg?itok=knbu7uIk)
Lussand- geology
Hardangerfjorden kløyver Hordaland i to. Den etter måten rettlinja fjorden skjer seg liksom på skeive inn i landet. Ikkje som Sognefjorden og Nordfjord – dei krokar og buktar seg innover meir eller mindre vinkelrett på kysten. Hardangerfjordens utforming har røter 400 millionar år tilbake i tida, då den veike sona i fjellet, der isen seinare tok grådig for seg, vart danna. Denne sona stig på land ved Lussand.
![Gneiss.](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/sam_25.jpg?itok=1PhE0wUc)
![Gullbotnen](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/sam_18.jpg?itok=dlJQCo79)
Gullbotnen
A barren belt where almost nothing grows, runs through the forest on the east slope of Gullbotnen. But, along the west side of the main road there is a fertile zone that flourishes with several finicky plant types. The contrasts arise from the extreme variations in the nutrient content of the bedrock.
![Slåttene](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/sam_14.jpg?itok=TPx2vADn)
![The mill in Kvernapollen](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/kvh_287-3.jpg?itok=bugwrxNl)
Kvernapollen
When the workers came to Kollsnes to start on the work with the landing for the gas terminal from the Troll field in the North Sea, they found the ruins of an old farm mill at Kvernapollen.
![The Hopland mills around 1940.](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/kvh_304-3.jpg?itok=ZvabRlGu)
![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)
![Purkebolsvatnet](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/vatnet.jpg?itok=V6qF1GL6)
Purkebolsvatnet
Lake Purkebolsvatnet is perhaps western Norway's largest sleeping city - for birds. They come in the thousands, usually in later summer and autumn. The barn swallows alone number 10 000 - 12 000 at their most numerous.