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![Boat bow of oak shaped like an animal head.](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/kvh_223-4.jpg?itok=6Y1lzt5t)
![Oyster farmer Alf-Roald Sætre of the Espevik dam](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/tysnes_6.jpg?itok=Qe16WF4L)
![Leech (Jan Rabben)](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/tysnes_9.jpg?itok=6mOcgRc5)
![Reksteren (Svein Nord)](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/tysnes_17.jpg?itok=Vcvm41-z)
Vernøya
If you smell a foul smell out in nature, you mustn't immediately think that the reason is cloaca from houses or cabins. The reason can be an entirely natural process that occurs when plants are broken down under special conditions. When there is little oxygen available, hydrogen sulphide can be produced. This is a gas that seeps up from the earth and smells like rotten eggs.
![Nils Hertzber’s watercolour from 1829 gives us an impression of the burial site with the menhirs at Årbakkesanden.](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/1/kvh_222-1-1.jpg?itok=iSlCbTy_)
Årbakka- The prehistoric site
The prehistoric site at Årbakkasanden with menhirs and burial mounds has been visited, described and illustrated by many learned researchers through the last 350 years. All the same, we still know very little of this unique cultural monument.