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Opal lake

Opal lake

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...

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