Geologic image in the Kentucky Geological Survey data repository.Image Name: Triplet Tunnels Image Date: 11/4/2012 Category: photo_outcrop Source: Martin, Steve Format: JPG Size (MB): 1.69 Pixel Dimensions: 3072 x 2304 Description: View from the top of one of the Triplet Tunnels in McCreary County. This arch has a span of 3 feet.