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The Caverns of the Bog  
This place is full of sapphires, it is located in the west of the [elf](/wiki/bicolline/species/elves/) kingdom. The mountains of [Irendille](/wiki/bicolline/regions/irendille/), visible from the [Empire](/wiki/bicolline/regions/empire/) and the [Land of Kafe](/wiki/bicolline/regions/pays-de-kafe/), shelter this treasure which has never been exploited. Elves have always used these stones for medicinal purposes.