Great Falls
Giant Springs water gravitates from the Little Belt Mountains, south east of Great Falls. It travels under ground, through limestone, to the springs. The journey takes less than 50 years, then bubbles up 400 feet to the surface. The rock bed of the springs, right, doesn't hinder the flow; water forces its way through cracks in the rocks, using the pressure of the rocks to propel it. Over 150 million gallons of water flows from the spring into the Missouri every day. A fish hatchery operates here, with a pool displaying some of the fish found in the Missouri. During their stay, Corps members dined on a variety of fish caught in the Missouri. Lewis discovered the cutthroat trout here, top right. The scientific name is for Clark.
Lewis & Clark Trail - Montana
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