The Stillwater Complex is a geological formation located in Montana, USA, known for its rich deposits of precious metals, particularly platinum and palladium. This complex is part of the larger Beartooth Mountains and is significant for its unique mineralogy and economic importance in mining. Discovered in the 1970s, the Stillwater Complex has been extensively studied for its layered igneous rocks, which contain valuable minerals. The area is also home to various geological features, making it a site of interest for both scientists and mining companies.