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Colorado R floodplain, Cal-Arizona border
Aerial view of Colorado River and its floodplain, with Blythe, California, Palo Verde Valley, California-Arizona (190921-58)
Download ImageColorado R floodplain, Cal-AZ border (vertical)
Aerial view of Colorado River and its floodplain, with Blythe, California, Palo Verde Valley, California-Arizona (190921-56)
Download ImageConcrete-lined river channel and Los Angeles, California
Aerial view of Concrete-lined river channel. Los Angeles River and Los Angeles, California (190921-26)
Download ImageConcrete-lined channel, LA, Cal (vertical)
Aerial view of Concrete-lined river channel. Los Angeles River, California (190921-25)
Download ImageFallen sandstone blocks, central Ohio (vertical)
Blocks of Mississippian Black Hand Sandstone, fallen from the roof of an alcove. Old Man’s Cave, Ohio. (220606-55)
Download ImageFallen sandstone blocks, central Ohio
Blocks of Mississippian Black Hand Sandstone, fallen from the roof of an alcove. Old Man’s Cave, Ohio. (220606-55)
Download ImageFallen sandstone block on creek, Ohio
Block of Mississippian Black Hand Sandstone, fallen from overhanging alcove on Old Man’s Creek, Hocking Hills State Park, Ohio (220606-49)
Download ImageCave eroded along fracture, central Ohio
Old Man’s Cave, eroded along a fracture in the Mississippian Black Hand Sandstone, Ohio. Note the honeycomb weathering (tafoni) on the left. (220606-36)
Download ImageCave eroded along fracture, Ohio (vertical)
Opening to Old Man’s Cave, eroded along a fracture in the Mississippian Black Hand Sandstone, central Ohio. (220606-35)
Download ImageNatural bridge in sandstone, Ohio (vertical)
Natural bridge eroded into Mississippian Black Hand Sandstone, near Rockbridge, Ohio (220606-27)
Download ImageNatural bridge eroded into sandstone, Ohio
Natural bridge eroded into Mississippian Black Hand Sandstone, near Rockbridge, Ohio (220606-26)
Download ImageWaterfall and plungepool on sandstone, central Ohio
Upper Falls and plungepool over Mississippian Black Hand Sandstone on Old Man’s Creek, near Old Man’s Cave, Ohio. (220606-14)
Download ImageCross-bedded Mississippian Black Hand Sandstone, Ohio
Cross-bedding in river-deposited Mississippian Black Hand Sandstone, Ohio (220606-9)
Download ImageOhio River and terraces, Ohio-Kentucky
Aerial view of Ohio river and stranded fluvial terraces, looking upriver Ohio-Kentucky. Kentucky on the right. (220605-43)
Download ImageOhio River and terraces, Ohio-Kentucky
Aerial view of Ohio river and stranded fluvial terraces, looking upriver Ohio-Kentucky. Kentucky on the right. (220605-40)
Download ImageWater tower, SW Ohio
Aerial view of water tower in residential area, SW Ohio (220605-37)
Download ImageMeander Bend, Great Miami River, Ohio
Aerial view of Meander Bend, Great Miami River, Ohio (220605-28)
Download ImageMeander Bend, Great Miami River, Indiana-Ohio
Aerial view of Meander Bend, Great Miami River, Ohio showing a point bar and cut bank. (220605-28)
Download ImageAgriculture and forest land, central Illinois, USA
Aerial view of Agriculture and forest land, central Illinois (220605-13)
Download Imageriver channel emptying into Great Salt Lake, Utah
Aerial view of salt-laden river channel emptying into Great Salt Lake, Utah (220605-6)
Download ImageWillamette River and Willamette Valley, Oregon
Aerial view of the Willamette River and Willamette Valley, Oregon, looking east. Harrisburg lies on the east bank near the center of the photo.
Download Image
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