Los koboltgruva, Mining museum in Los, Sweden.
Los koboltgruva is a former mining site with underground passages running through multiple levels, displaying original extraction equipment and mineral deposits from the 18th century. The facility preserves the typical layout of a historical cobalt mine with natural rock formations and abandoned work areas.
The mine opened in 1730 and operated for roughly 4 decades before closing in 1773. During this period, workers extracted significant quantities of cobalt that were shipped across Europe for use in manufacturing.
The name Los refers to the cobalt deposits that were mined here for centuries. Visitors can observe how this work shaped the landscape and left visible marks on the rocks and ground.
Visitors should bring warm clothing as the underground environment stays cool and humid throughout the year. Sturdy footwear is advised for navigating the uneven tunnel passages safely.
A scientist named Axel Fredrik Cronstedt examined ore samples from this location and discovered a new chemical element he called nickel while doing so. This discovery occurred in 1751 and was made possible by the minerals extracted from this mine.
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