riffsyphon1024: Ringling Brothers Mural
riffsyphon1024: Wisconsin Historical Marker for the Mid-Continent Railway Museum
riffsyphon1024: Ableman-Rock Springs Mural
riffsyphon1024: Van Hise Rock Historical Marker
riffsyphon1024: Cheese Hours
riffsyphon1024: Minnesota Welcomes You
riffsyphon1024: South Dakota Welcome Sign
riffsyphon1024: Minnehaha County Historical Marker
riffsyphon1024: Visitors Center Closed?
riffsyphon1024: First Wall Drug Sign
riffsyphon1024: The Rushmore Workers
riffsyphon1024: Wyoming Welcomes You
riffsyphon1024: Devils Tower Explanation
riffsyphon1024: Map of the Homestake Mine
riffsyphon1024: See the Diagram
riffsyphon1024: Born of Volcanoes
riffsyphon1024: "Well It's Gonna Cost Ya, 15000 Credits.."
riffsyphon1024: But I Wanted to See the Blue Hole!
riffsyphon1024: Danger.. Duh
riffsyphon1024: Pay No Attention to the Bright Red Sign
riffsyphon1024: Bow Down Before the Wind
riffsyphon1024: Jurassic Hogback Parking
riffsyphon1024: Annotated Geology
riffsyphon1024: A Geologic History of the Denver Area
riffsyphon1024: Diplodocus Leg Bone Mold
riffsyphon1024: Direction of Flow
riffsyphon1024: Detailed History
riffsyphon1024: Layers of Time
riffsyphon1024: Did You Eat Corn?
riffsyphon1024: Splashback?