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.

Kongstun

In the Middle Ages the farmers were under obligation to transport state officials. The bishops were entitled to 18 horses when they travelled about on visitations, and the king could requisition free transport.

Iglatjødno

Leirvik- The trading post

Already in the Middle Ages the good harbour at Leirvik provided a connecting point. Here was a court of law, and a guesthouse was established here in the 1600s. But Leirvik never achieved the status of a trading post or a ship-loading place. In the census of 1865 parts of the farms Nordre Bjelland, Leirvik and Orninggård are mentioned as the “Coastal district of Lervig”. And the community grew around the old guesthouse location early in the 1800s.

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.

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.