Ødegården Mine (Ødegaarden Mine), Ødegården field, Bamble, Telemark, Norway
http://www.mindat.org/locentry-10495.html

e anche da altra fonte:

ESØYA

The southernmost island in Hamnsundet. From ancient times, the islands has been a centre of extraction of steatite for churches and production of stone vessels. As late as in the 19th century, a trail load was extracted for the cathedral in Trondheim. Traces of the quarry are still visible. The brittle steatite still features thousands of signatures carved into the rock by people who have sought a harbour of refuge. Esøya is the biggest "visitor´s book" of the Nordland coast. Runic inscriptions from the 12th century are also to be found on the island.