Great Barrel Cave is a large limestone cave located in the Ozark Mountains of Missouri. It features impressive rock formations, including stalactites and stalagmites, formed over thousands of years. The cave is part of the Ozark National Scenic Riverways and is known for its unique geological features and diverse ecosystems. Visitors to Great Barrel Cave can explore its vast chambers and learn about the cave's history and ecology. The cave is home to various species of bats, making it an important site for wildlife conservation. Guided tours are available, providing insights into the cave's formation and the importance of cave ecosystems.