A "Shakehole", formed as a result of the underlying rock being eroded by water, Northern Pennines, England, UK.
Size: 4197px × 2777px
Location: Northern Pennines, England, UK.
Photo credit: © Doug McCutcheon / LGPL / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: attrition, british, english, erosion, feature, limestone, rock, scenery, science, shakehole