File:Canyon passage (Ste. Genevieve Limestone, Middle Mississippian; Pass of El Ghor, Mammoth Cave, Kentucky, USA) - 53625663811.jpg
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Summary
[edit]DescriptionCanyon passage (Ste. Genevieve Limestone, Middle Mississippian; Pass of El Ghor, Mammoth Cave, Kentucky, USA) - 53625663811.jpg |
English: Western Kentucky’s Mammoth Cave is the longest known cave on Earth, with 426 miles of passages currently explored & mapped, as of March 2024. The name “Mammoth Cave” does not refer to its world-record length, nor to the early discovery of mammoth or mastodon fossils here (actually, fossil proboscidean skeletal remains have been reported from this locality). Rather, the name refers to the immense size of many of the rooms and passages.
It is not certain exactly when Mammoth Cave was discovered. A story about its 1797 discovery by a man named Houchins (or Hutchins) is fictional - the park service knows this, but still tells the story during cave tours. However, Mammoth Cave’s earliest acknowledgement in available historical records dates to 1797. Seen here is a canyon passage called the Pass of El Ghor. El Ghor connects Boone Avenue with Silliman Avenue. Canyon passages are taller than they are wide. They develop in the vadose zone - above the water table. An underground stream used to flow through here. The bedrock is the Ste. Genevieve Limestone (Meramecian Series, upper Middle Mississippian). Locality: Pass of El Ghor, Mammoth Cave Ridge, Mammoth Cave National Park, western Kentucky, USA (accessed with park permission) |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/53625663811/ |
Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/53625663811. It was reviewed on 2 April 2024 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
2 April 2024
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current | 16:44, 2 April 2024 | 3,000 × 4,000 (7.95 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/53625663811/ with UploadWizard |
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Camera manufacturer | Canon |
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ISO speed rating | 400 |
Date and time of data generation | 11:37, 11 March 2024 |
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Horizontal resolution | 180 dpi |
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File change date and time | 15:08, 24 March 2024 |
Exif version | 2.21 |
Date and time of digitizing | 11:37, 11 March 2024 |
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Lens used | 6.2-18.6 mm |
Date metadata was last modified | 11:08, 24 March 2024 |
Unique ID of original document | 292A3C63FDE25D9A8C02F9E0EF24C6CC |