Opalsøen is a swimming lake surrounded by steep cliff faces. The lake is a relic from the time when quarrymen quarried granite here. You can jump into the water from the cliffs' 7-metre-high ledge if the temperature and your courage allow it, or you can experience the lake on a walk through the undulating landscape.
Opalsøen is a swimming lake surrounded by steep cliff faces. The lake is a relic from the time when quarrymen quarried granite here. You can jump into the water from the cliffs' 7-metre-high ledge if the temperature and your courage allow it, or you can experience the lake on a walk through the undulating landscape.
Opalsøen is located by Bornholm's northernmost rocky headland, Hammerknuden, a unique nature reserve characterised by the sea, cliffs, and rocky heathland. Right beside it lies Bornholm's largest lake, Hammersøen, which forms the floor of the rift valley that partially separates Hammerknuden from the rest of Bornholm.
In former times, granite quarrying was a major industry on the island, and the quarry at Opalsøen, known as Hammerbruddet, was active from the 1880s until 1971. Quarrying then ceased as a result of Hammerknuden's preservation. Subsequently, the deepest part of the quarry filled with water, which today forms Opalsøen. In addition to Opalsøen, you can find remnants of other former quarries scattered across Nordbornholm.
If you have a head for heights, you can zip-line across the lake during the summer from the top of one of the cliffs. You finish the ride by dropping into the water. For the truly adventurous, rock climbing and abseiling are also possible on the cliff faces. You will find several car parks near Opalsøen.
FAQ about Opalsøen
Is there parking available?
Yes, there are car parks near Opalsøen.
Can you swim in Opalsøen?
Yes, swimming is allowed. You can also try the zip-line for a fun ride before splashing into the water.
How high is the cliff edge around the lake?
7 metres high.
