Kayaking the Turnip Rock Caves Kayaking to Turnip Rock and its nearby caves in Lake Huron is one of Michigan’s most scenic paddling experiences. The seven-mile round-trip route from Port Austin follows the shoreline, passing limestone cliffs and lush forests before reaching the iconic rock formation. Turnip Rock, shaped by centuries of erosion, rises from the water with its tree-covered top, making it a striking natural landmark. Just beyond, paddlers can explore sea caves carved into the limest