Wood ladders, Bear Hollow Canyon, Turkey Run State Park, Indiana, USA. Rocky Hollow Falls Canyon Nature Preserve.
Wood ladders allow hikers to explore Bear Hollow Canyon in Turkey Run State Park, in historic Parke County, Indiana, USA. Rocky Hollow Falls Canyon Nature Preserve is a National Park Service Registered Natural Landmark. The Mansfield sandstone bedrock was formed during the Carboniferous Period when sand layers at the mouth of ancient Michigan River was compacted and cemented into solid rock. Ancient swamps became coal seams which were mined in the late 1800s and early 1900s. Glacial meltwater erosion in the Pleistocene Epoch carved today's canyons and potholes.Add to Cart Add to Lightbox Download