Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Mammoth Cave National Park' has mentioned 'Ridge' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| Since the 1972 unification of Mammoth Cave with the even-longer system under Flint Ridge to the north, the official name of the system has been the Mammothxe2x80x93Flint Ridge Cave System. | WIKI |
| The contact between limestone and sandstone can be found by hiking from the valley bottoms to the ridgetops: typically, as one approaches the top of a ridge, one sees the outcrops of exposed rock change in composition from limestone to sandstone at a well-defined elevation. | WIKI |
| Besides the remains that have been discovered in the portion of the cave accessible through the Historic Entrance of Mammoth Cave, the remains of cane torches used by Native Americans, as well as other artifacts such as drawings, gourd fragments, and woven grass moccasin slippers are found in the Salts Cave section of the system in Flint Ridge. | WIKI |
| In the early 20th century, Floyd Collins spent ten years exploring the Flint Ridge Cave System (the most important legacy of these explorations was the discovery of Floyd Collins' Crystal Cave and exploration in Salts Cave) before dying at Sand Cave, Kentucky, in 1925. | WIKI |
| In 1955 Crystal Cave was connected by survey with Unknown Cave, the first connection in the Flint Ridge system. | WIKI |
| Some of the participants in the C-3 expedition wished to continue their explorations past the conclusion of the C-3 Expedition, and organized as the Flint Ridge Reconnaissance under the guidance of Austin, Jim Dyer, John J. Lehrberger and E. Robert Pohl. | WIKI |
| Colossal Cave was connected by survey to Salts Cave in 1960 and in 1961 Colossal-Salts cave was similarly connected to Crystal-Unknown cave, creating a single cave system under much of Flint Ridge. | WIKI |
| By 1972, the Flint Ridge Cave System had been surveyed to a length of 86.5 miles (139.2xc2xa0km), making it the longest cave in the world. | WIKI |
| During the 1960s, Cave Research Foundation (CRF) exploration and mapping teams had found passageways in the Flint Ridge Cave System that penetrated under Houchins Valley and came within 800 feet (240xc2xa0m) of known passages in Mammoth Cave. | WIKI |
| In 1972, CRF Chief Cartographer John Wilcox pursued an aggressive program to finally connect the caves, fielding several expeditions from the Flint Ridge side as well as exploring leads in Mammoth Cave. | WIKI |
| On a July 1972 trip, deep in the Flint Ridge Cave System, Patricia Crowtherxe2x80x94with her slight frame of 115 pounds (52xc2xa0kg)xe2x80x94crawled through a narrow canyon later dubbed the "Tight Spot", which acted as a filter for larger cavers. | WIKI |
| With this linking of the Flint Ridge and Mammoth Cave systems, the "Everest of speleology" had been climbed. | WIKI |
| Further connections between Mammoth Cave and smaller caves or cave systems have followed, notably to Proctor/Morrison Cave beneath nearby Joppa Ridge in 1979. | WIKI |
| On March 19, 2005, a connection into the Roppel Cave portion of the system was surveyed from a small cave under Eudora Ridge, adding approximately three miles to the known length of the Mammoth Cave System. | WIKI |
| At least two other massive cave systems lie short distances from Mammoth Cave: the Fisher Ridge Cave System and the Martin Ridge Cave System. | WIKI |
| The Fisher Ridge Cave System was discovered in January 1981 by a group of Michigan cavers associated with the Detroit Urban Grotto of the National Speleological Society. | WIKI |
| [28] So far, the Fisher Ridge Cave System has been mapped to 125 miles (201xc2xa0km). | WIKI |
| This cave became known as the Martin Ridge Cave System in 1996, as new exploration connected the 3 nearby caves of Whigpistle Cave (Schwartz's original entrance), Martin Ridge Cave, and Jackpot Cave. | WIKI |
| As of 2018, the Martin Ridge Cave System had been mapped to a length of 34 miles (55xc2xa0km), and exploration continued. | WIKI |