| 词条 | Tears of the Turtle Cave |
| 释义 |
| name = Tears of the Turtle | other_name = | photo =tears3.jpg | photo_width = | photo_caption = | location = Bob Marshall Wilderness | depth = 1659 ft (506 m) | length = 1.167 mi (1878 m) | survey = | survey_format = | discovery = | geology = | entrance_count = 1 | entrance_lisifficulty = | hazards = Temperature, Vertical, Remote Location | access = }}Tears of the Turtle Cave is located in the Bob Marshall Wilderness in western Montana and is currently the deepest limestone cave in the United States since passing New Mexico's Lechuguilla cave in 2014.[1] As of August 2016 the cave is known to be 1659 feet deep and 1.32 miles long.[2][3] The cave consists mostly of roughly 2 foot wide fissure passage passing over dozens of short rope drops. With a mean temperature of 39 degrees F (4 C), it is muddy and poorly decorated.[4] Exploration HistoryThe entrance to Tears of the Turtle Cave was found in 2006. The cave passage is mostly a two to three foot wide fissure that follows a stream downward through numerous rappels. In 2014 a team of nine cavers explored new passage pushing the cave to a depth of 1629 feet and in doing so passed New Mexico's Lechuguilla Cave to become the deepest known limestone cave in the United States.[1][5][6] Exploration continued in 2016 when teams returned to push the cave to its current known depth of 1659 feet.[7] On those trips the difficulty necessitated establishing camp in the cave for the first time. This, along with the technical rope work, 39 degree temperature, and remote location of the cave make continued exploration difficult. A return trip is currently planned for 2019.[7] Ongoing exploration is done through the Caves of Montana Project, an official project of the National Speleological Society. Exploration is conducted under a MOU with the United States Forest Service.[3] GeologyThe cave is located in typical karst landscape and is formed in the Cambrian Pagoda Limestone. Over the years water from rainfall and snowmelt have dissolved away the limestone to form a typical vadose solutional cave with fissure passage 2–3 feet wide and tall ceilings.[8] See also
References1. ^1 {{Cite news|url=http://missoulanews.bigskypress.com/IndyBlog/archives/2014/09/02/deepest-cave-discovered-in-the-bob|title=Deepest cave discovered in the Bob|last=McDermott|first=Ted|newspaper=Missoula News|access-date=2016-12-14}} 2. ^{{Cite web|url=http://www.caverbob.com/usadeep.htm|title=USA Deepest Caves|last=Gulden|first=Bob|date=2016-12-13|website=|publisher=NSS Geo2 Committee on Long and Deep Caves|access-date=2016-12-13}} 3. ^1 {{Cite web|url=https://www.fs.usda.gov/Internet/FSE_DOCUMENTS/stelprd3823003.pdf|title=Beneath the Forest|last=Ballensky|first=Jason|date=2014-09-01|website=|publisher=United States Forest Service|access-date=2017-01-06}} 4. ^{{Cite journal|last=Johnson|first=Peter|year=2014|title=Tears in Montana: Deep Caving in the Bob Marshall Wilderness|url=|journal=NSS News|volume=72, #12|pages=6|via=}} 5. ^{{Cite web|url=http://flatheadbeacon.com/2014/09/17/exploring-hidden-world-bob/|title=Exploring the Hidden World of The Bob|date=2014-09-17|website=Flathead Beacon|access-date=2017-01-06}} 6. ^{{Cite news|url=http://www.spokesman.com/blogs/outdoors/2014/sep/05/bob-has-deep-dark-wilderness-secret/|title=The Bob has a deep, dark wilderness secret|newspaper=Spokesman.com|access-date=2017-01-06}} 7. ^1 {{Cite news|url=http://fwp.mt.gov/mtoutdoors/HTML/articles/2016/caving.htm#.WE8VubIrK00|title=How Low Can They Go?|access-date=2016-12-17}} 8. ^{{Cite journal|last=Bodenheimer and Powell|first=Hans and John|year=2012|title=Continental Divide Syncline Geology|url=http://alpinekarst.org/vol4-2012/|journal=Alpine Karst|volume=4|pages=|via=}} External links* Northern Rocky Mountain Grotto{{coord missing|Montana}} 3 : Caves of Montana|Limestone caves|Wild caves |
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