Schnauzerfreund: Feuersteinklippe
Schnauzerfreund: Höhle an der Teufelsmauer (Timmenrode,Harz)
Schnauzerfreund: Höhle an der Teufelsmauer (Timmenrode,Harz)
Schnauzerfreund: Teufelsmauer (Harz)
Schnauzerfreund: Teufelsmauer (Harz)
rwgabbro1: A Marvel of Masonry, Part 6: The Palace of the Porphyrogenitus (late 13th Century) and the Blachernae Walls (different sections in different centuries), Istanbul, Turkey
Denis Trente-Huittessan: Château de de Montrottier - Lovagny (Haute-Savoie, France)
Denis Trente-Huittessan: Carrière du Val-de-Fier, Seyssel (Haute-Savoie, France)
Kira Pichano: Road in forest
rwgabbro1: Milwaukee in Stone and Clay: A Guide to the Cream City's Architectural Geology (NIU Imprint of Cornell University Press)
Mount Fuji Man: Rock formations
Mount Fuji Man: Rocky promontory
Denis Trente-Huittessan: Au coteau des Verts Galants - Chauffour-les-Étréchy (Essonne, France)
rwgabbro1: Architectural Geology of Southwestern Wisconsin, Part 10: Detail of the Green County Courthouse, Monroe, Wisconsin, USA (1891)
rwgabbro1: Through the Mist and Spray, Part 2: The High Falls of the Pigeon River, Grand Portage State Park, Minnesota, USA
rwgabbro1: From Persimmon Gap to Boquillas Canyon, Part 7: As the Shadows Fall, Big Bend National Park, Texas, USA
Denis Trente-Huittessan: Vallée de la Corrèze (Corrèze, France)
rwgabbro1: Graveyard Geology of Chicago, Part 10: The Frances Pearce Monument, Rosehill Cemetery, Edgewater Neighborhood (1856; moved here in 1861)
rwgabbro1: The Brownstone Chronicles, Part 16: This Is Getting Unhealthily Obsessive; Another Close-Up of an Old Copper-Mine Building, Quincy Mine Hoist Historic Site, Hancock, Michigan, USA
rwgabbro1: Architectural Geology of Southwestern Wisconsin, Part 6: Close-Up of the First United Methodist Church, Mineral Point, Wisconsin, USA (1871)
ChPflügl: IMG_1740
ChPflügl: IMG_1739
ChPflügl: IMG_1734
ChPflügl: IMG_1698
ChPflügl: IMG_1695
ChPflügl: IMG_1623
rwgabbro1: From Persimmon Gap to Boquillas Canyon, Part 4: Fall Down, Go Boom, Annotated; Big Bend National Park, Texas, USA
rwgabbro1: Peaceable Kingdom: A Downstream View of the Connecticut River from Mount Sugarloaf, South Deerfield, Massachusetts, USA
rwgabbro1: The Natural Bridge What Ain't, Part 6: Nature's Own Birdbath, and Lookout Point; Natural Bridge State Resort Park, Kentucky