The Opal Lake (Opalsøen)
The Opal Lake (Opalsøen) on northern Bornholm is one of the island’s most striking natural areas, where steep cliffs surround deep, clear water shaped by a former granite quarry. Today, the area has been transformed into a scenic destination with hiking trails, viewpoints and outdoor experiences. Located near Hammerknuden, the lake offers breathtaking views over both the rugged landscape and the Baltic Sea.
The Opalsø (Opal Lake) as a remain of the Granite age
From the 2nd half of the 19th century Bornholm witnessed a tremendous granite industry. Granite became one of the most important export goods of Bornholm. There was a real boom in the granite industry on the island and first in 1970 the quarry was closed.
First granite quarry, now a unique nature and recreation area
You have several hiking trails running by the lake. And if you walk up on the top of the cliffs, you get a breathtaking view over the whole area and even the Baltic Sea and Hammershus castle ruin.
The Opal Lake is also a swimming lake
You can swim in the Opal Lake, but please note, that the lake is very deep – and therefore only suited for people, who can swim, as you won’t be able to stand on solid ground anywhere in the lake.
Facilities
- Marked-out routes
- Information display
- Toilet
- Covered campfire
- Shelters
- Picnic table
- Hike Friends
Get directions
Hammersøvej/Sænevej
3770 Allinge
Last updated by::Destination Bornholminfo@bornholm.info
