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Beartooth Mountains, Stillwater County
The Stillwater Complex is a layered mafic intrusion, formed 2.7 billion years ago. Within this ancient rock lies the J-M Reef, a layer just one to three meters thick that contains the highest-grade platinum and palladium deposit in the Western Hemisphere.
Visitor Access
This is an active, large-scale commercial mining operation located entirely on private land. It is strictly closed to the public. The geology can only be viewed from a distance on the public forest roads that approach the Beartooth front.