File:Vertical shaft (Sidesaddle Pit, Black Snake Avenue, Mammoth Cave, Kentucky, USA) 4 (20173061975).jpg
![File:Vertical shaft (Sidesaddle Pit, Black Snake Avenue, Mammoth Cave, Kentucky, USA) 4 (20173061975).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/9/9f/Vertical_shaft_%28Sidesaddle_Pit%2C_Black_Snake_Avenue%2C_Mammoth_Cave%2C_Kentucky%2C_USA%29_4_%2820173061975%29.jpg/800px-Vertical_shaft_%28Sidesaddle_Pit%2C_Black_Snake_Avenue%2C_Mammoth_Cave%2C_Kentucky%2C_USA%29_4_%2820173061975%29.jpg?20191013173341)
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[edit]DescriptionVertical shaft (Sidesaddle Pit, Black Snake Avenue, Mammoth Cave, Kentucky, USA) 4 (20173061975).jpg |
Western Kentucky's Mammoth Cave is the longest cave system on Earth, with 412 miles known and mapped as of fall 2017. The name does not refer to the early discovery of fossil mastodon or mammoth bones here. Rather, the name refers to the immense size of many rooms and passages. The system has a variety of cave passages: tubular passages, canyon passages, vertical shafts (domepits), keyhole passages, and giant canyon passages. Sidesaddle Pit is a moderately large vertical shaft that can be viewed during the 2-hour, 2 mile-long Historic Tour. Vertical shafts, also called domepits, are large, silo-shaped, dissolutional features in caves. They form in the vadose zone (above the water table) as downward-moving groundwater dissolves limestone by enlarging joints or joint intersections. Limestones of the Fredonia Member line the walls of Sidesaddle Pit. The Fredonia is one of many members in the Ste. Genevieve Limestone (upper Middle Mississippian). Vertical grooves called flutes are incised on the walls here. Flutes are vadose dissolutional features on vertical cave walls. Similar to flutes are rills, which are vadose dissolutional features on sloped limestone surfaces The rubble-covered floor of this domepit appears to bottom out in the lower Ste. Genevieve Limestone (Fredonia Member) or the upper St. Louis Limestone. Locality: Sidesaddle Pit, Black Snake Avenue, Mammoth Cave, west-central Kentucky, USA |
Date | |
Source | Vertical shaft (Sidesaddle Pit, Black Snake Avenue, Mammoth Cave, Kentucky, USA) 4 |
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@N05/20173061975 (archive). It was reviewed on 13 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
13 October 2019
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current | 17:33, 13 October 2019 | ![]() | 955 × 599 (345 KB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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User comments | LEAD Technologies Inc. V1.01 |
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Width | 955 px |
Height | 599 px |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 96 dpi |
Vertical resolution | 96 dpi |
Software used | Adobe Photoshop Elements 13.0 (Macintosh) |
File change date and time | 15:06, 16 March 2019 |
Exif version | 2.21 |
Color space | sRGB |
Unique ID of original document | 28D6917A77F15FFA607FFF1AD6D4064A |
Date and time of digitizing | 11:04, 16 March 2019 |
Date metadata was last modified | 11:06, 16 March 2019 |
IIM version | 1 |