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Børtveit
Børtveit is known to be a place with a lot of rain. We must go to Samnanger or Indre Matre to find a higher rainfall. The average rainfall on Børtveit is 2871 millimetres, Slåtterøy has only 1328 millimetres and Fitjar 1610 millimetres.
![Huglo](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/stord_27.jpg?itok=9cCQ5yAR)
Huglo
The majority of Huglo is bare rock. A bit of dwarf pine forest is the only vegetation able to put down roots. Along the west- and east sides, to the contrary, the landscape is unusually green and lush. The reason lies both in the bedrock and in the ice that covered the area 12 000 years ago.
![Hystadmarka, Stord](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/1/kvh_212-1_gravhaug212.jpg?itok=WN_nSl1Q)
Hystad- burial mounds
The biggest collection of prehistoric burial relics in Stord is to be found in Hystadmarka. There are still 16 burial mounds and two stone rings visible here; finds that span from the Bronze Age to the Viking Age in time.
![Spring in the black alder forest of Hystadsmarkjo.](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/stord_8.jpg?itok=uKjQ61DI)
Hystad- the black alder forest
One of the biggest black alder forests in the country is in Hystadmarkjo. Along the well prepared trail through the forest you can experience an exceptional nature with an unusual abundance of exuberant plant species. But what has laid the foundation for this richness?
![Iglatjødno](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/stord_44.jpg?itok=MRGFOnX6)
![Lake Tveitavatnet](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/stord_42.jpg?itok=AqtnVja2)
Tveitavatnet
It is difficult to imagine that a plant can grow at the same place for many thousands of years: Climate and local environment change. Different species grow up and die out. Nonetheless, some plants get established, but don't manage to spread into new areas, because the climate is at the edge of what they can tolerate. Great fen-sedge is just such a plant.
![Ådlandsstova, as it stood at Nedre Ådland, Stord](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/kvh_209-2_sk_414.jpg?itok=cG31Cib5)
Ådlandsstova
The Ådland house is one of the biggest medieval houses still existing in West Norway. It is constructed from unusually large, hard fir wood, beautifully oval-cut. One story links the cottage to the Gildeskålbakken at Orninggård (Lower Ådland); thus indicating that the cottage has been the medieval banqueting hall. The building has been dated back to the 13-1400s by carbon dating.
![Baldellia](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/stord_30.jpg?itok=cgEojqGU)
Ådlandsvatnet
Plants that grow in and beside water have to be prepared for marked and rapid changes in their living conditions. They must be able to tolerate living under water without drowning, and getting totally dried out without whithering. Many swamp plants are well adapted to these kinds of changes.