Antelope Island State Park, Davis County, Utah
Photographer: Paul Inkenbrandt; © 2012

Storm clouds clear over Bridger Bay and Antelope Island, the largest island in Great Salt Lake. Much of the island, including Stringham Peak (left background; elevation 6,345 feet), is made up of Precambrian-age rocks that are some of the oldest rocks in Utah (600 million to 2.5 billion years old).