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Oleåen Stream has the heaviest water flow of any stream on Bornholm and flows into the Baltic Sea near Slusegaard. A watermill is also located in the stream valley.

There is also a fish-spawning system, comprising a fish house, hatchery and spring house, as well as various weirs, sluices and dams.

The facility is unique and the fish house is the only one of its kind in Denmark.

Jumping trout

- watermill and fish house

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The system was used for catching large trout when they migrated upstream to spawn in the autumn. The trout were led up through the fish house, where they were caught and stripped of their roe.

After fertilisation of the eggs, they were placed in trays in the hatchery where they were supplied with a constant flow of fresh water from a spring in the spring house.

When the eggs hatched, the fingerling trout were released into the stream.

In the autumn, the stream is brimming with water and it is possible to see large trout jumping upstream in the waterway.

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This takes place for only a few days every year, so if you follow our Facebook group, you will be notified of when this happens.

Click the photos to enlarge

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