Geologic image in the Kentucky Geological Survey data repository.Image Name: Sandstone, Hyden Formation, Knox County Image Date: 6/26/2007 Category: photo_outcrop Source: Carey, Dan Format: JPG Size (MB): 1.3 Pixel Dimensions: 2272 x 1704 Description: Sandstone in the Hyden Formation in the Knox County. Photo by Dan Carey, Kentucky Geological Survey.