Geologic image in the Kentucky Geological Survey data repository.Image Name: Image Date: 1/1/2008 Category: photo_scene Source: Potter, Paul Format: JPG Size (MB): 1.78 Pixel Dimensions: 1774 x 1014 Description: Looking up into the natural bridge which is made of Pennsylvanian Sandstone. It is called the Ravine Arch and is located in Carter Caves State Park.