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From Persimmon Gap to Boquillas Canyon, Part 14: Structural Geology Illustrated | Boquillas Canyon, Big Bend National Park, USA, and Mexico
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In and About Tuff Canyon, Part 5: My Favorite Moonscape | Big Bend National Park, Texas, USA
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The Canyonlands of France, Part 1: The Var River Winds through the Daluis Gorge (Gorges de Daluis), Maritime Alps
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The Bounty of Bell Smith Springs, Part 1: Under the Natural Bridge, Bell Smith Springs, Shawnee National Forest, Illinois, USA
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Headward-Eroded Hanging Valley with Exfoliation Joints: Taughannock Falls State Park, New York, USA
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In and About Tuff Canyon, Part 1: Normal Fault in Pyroclastic Deposits, Big Bend National Park, Texas, USA
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The Canyonlands of France, Part 3: Pronounced Jointing in Permian Red Beds, Daluis Gorge, Maritime Alps
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The Bounty of Bell Smith Springs, Part 7: Slump Blocks in Bay Creek and Dripping Canyon Wall, Shawnee National Forest, Illinois, USA
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In and About Tuff Canyon, Part 2: Basal Pillow Basalt and Breccia, Big Bend National Park, Texas, USA
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Geologizing in an Anthropogenic Canyon, Part 1: The Corinth Canal, Isthmus of Corinth, Greece
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In and About Tuff Canyon, Part 3: A Ballistic Block and Other Mafic Fragments in Pyroclastic Deposits, Big Bend National Park, Texas, USA
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In and About Tuff Canyon, Part 4: Taking a Far View, Big Bend National Park, Texas, USA
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The Canyonlands of France, Part 4: The Play of Light in a Vertiginous World, Daluis Gorge, Maritime Alps
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Geologizing in an Anthropogenic Canyon, Part 3: The Corinth Canal, Isthmus of Corinth, Greece
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Geologizing in an Anthropogenic Canyon, Part 4: The Corinth Canal, Isthmus of Corinth, Greece
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Santa Elena Canyon View 5: A Closer Look at the Downdropped Block North of the Terlingua Fault, and What Lies Beyond, Big Bend National Park, Texas, USA
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Santa Elena Canyon View, Part 6: Unions of Opposites | Big Bend National Park, Texas, USA
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Santa Elena Canyon View 7: Time for More Geobotany Along the Trail | Big Bend National Park, Texas, USA
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Santa Elena Canyon View 8: Reaching the Nadir, on the Bed of the Rio Grande | Big Bend National Park, Texas, USA
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Santa Elena Canyon View 9: A First Look at an Unusual Bromeliad | Big Bend National Park, Texas, USA
