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![The south side of Raunøya.](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/mas_21.jpg?itok=1rzpCAcc)
Raunøya
The sea birds discovered it long ago. Raunøya and the surrounding islands are the most beautiful places in Masfjorden.
![Herlandsnesjane](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/ost_19.jpg?itok=ziqPLTch)
Herlandsnesjane
Herlandsnesjane, a four-kilometre long peninsula in Lake Storavatnet in the middle of Osterøy, is well known among botanists. Here lies an unusually large and diverse bog.
![Lyse Monastery, reconstruction](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/1/kvh-239_lysekloster.jpg?itok=bc_kHrFJ)
![The monks leave their mark at Lysekloster](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/os_24.jpg?itok=Q5bQc7i9)
Lysekloster- The monks and nature
Lysekloster was the largest agricultural property in the country when it was phased out during the Reformation in 1537. In its prime this cloister encompassed two-thirds of all the farms in Os. The monks introduced and cultivated new plant species and it was probably they who stocked the waters with fish not indigenous to the area. This legacy from the Middle Ages has left a lasting mark.
![Raudlia](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/os_28.jpg?itok=88h0oT36)
![Villelia](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/os_13.jpg?itok=9i20fr7T)