Outdoor Recreation: A new passion awaits
                A tour guide talks about the submerged sandstone mine at Crystal City Underground, Missouri, July 17, 2021. The mine dates back to the late 1880s where it originally supplied materials to local glass manufacturers. (U.S. Air Force photo by Senior Airman Shannon Moorehead)
                
                    
                        PHOTO BY:
                        Senior Airman Shannon Moorehead
                    
                    
                        VIRIN:
                        210717-F-HF074-0844.JPG
                    
                    
                        FULL SIZE:
                        1.49 MB
                    
                 
                
                
                        
                        
                            
                                
                                    CAMERA 
                                    NIKON D750
                                    LENS 
                                    24.0-120.0 mm f/4.0
                                    APERTURE
                                    5
                                 
                                
                                    SHUTTERSPEED
                                    1/125
                                    ISO
                                    250
                                 
                             
                            No camera details available.
                         
                        
                            
                                IMAGE IS PUBLIC DOMAIN
                                
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                                    This photograph is considered public domain and has been cleared for release.
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