rwgabbro1: Through the Mist and Spray, Part 1: The High Falls of the Pigeon River, Grand Portage State Park, Minnesota, USA
rwgabbro1: Bedrock Island in the St. Louis River, Jay Cooke State Park, Minnesota, USA
rwgabbro1: Headward-Eroded Hanging Valley with Exfoliation Joints: Taughannock Falls State Park, New York, USA
rwgabbro1: Through the Mist and Spray, Part 2: The High Falls of the Pigeon River, Grand Portage State Park, Minnesota, USA
rwgabbro1: Through the Mist and Spray, Part 3: A Closer Look at the High Falls of the Pigeon River, Grand Portage State Park, Minnesota, USA
rwgabbro1: Through the Mist and Spray, Part 4: A Last Look at the High Falls of the Pigeon River, Grand Portage State Park, Minnesota, USA
rwgabbro1: The Bounty of Bell Smith Springs, Part 6: Terms of Separation, and Essential Connections; Bell Smith Springs, Shawnee National Forest, Illinois, USA
rwgabbro1: Geology of the High Falls Dam Site, Part 1: Introduction; Marinette County, Wisconsin, USA
rwgabbro1: Integrative Natural History of Amnicon Falls State Park, Part 2: Setting the Geologic Scene; Douglas County, Wisconsin, USA
rwgabbro1: Integrative Natural History of Amnicon Falls State Park, Part 3: The Douglas Fault Exposed | Douglas County, Wisconsin, USA
rwgabbro1: From the Hall of Disjointed Memories, Part 2: Cool, Clear Water | Front Range, Rocky Mountains, Colorado, USA
rwgabbro1: Integrative Natural History of Amnicon Falls State Park, Part 4: Documenting Touristic Cultural Uses of a Reverse Fault; Douglas County, Wisconsin, USA
rwgabbro1: Integrative Natural History of Amnicon Falls State Park, Part 11: Getting Our Bearings Before We Start the Hike | Douglas County, Wisconsin, USA
rwgabbro1: Integrative Natural History of Amnicon Falls State Park, Part 12: The Downstream View From Horton Covered Bridge | Douglas County, Wisconsin, USA