ผลต่างระหว่างรุ่นของ "ผู้ใช้:Timekeepertmk/กระบะทราย"

''Kitch-iti-kipi'' spring is one of the major tourist attractions on Michigan's [[Upper Peninsula of Michigan|Upper Peninsula]].<ref name="big"/> It is located in [[Thompson Township, Michigan|Thompson Township]] of [[Schoolcraft County, Michigan|Schoolcraft County]], northwest of the town of [[Manistique, Michigan|Manistique]], within [[Palms Book State Park]].<ref name="DNR">{{cite web |author = Michigan Department of Natural Resources |url = http://www.michigandnr.com/ParksandTrails/Details.aspx?id=425&type=SPRK |publisher = Michigan Department of Natural Resources |title = Palms Book State Park Detail |access-date = May 12, 2008 |archive-url = https://web.archive.org/web/20080602092501/http://www.michigandnr.com/parksandtrails/Details.aspx?id=425&type=SPRK |archive-date = June 2, 2008 |url-status = live }}</ref><ref name="books">{{cite book |last1 = DuFresne |first1 = Jim |first2 =Christine |last2 = Clifton-Thornton |year = 1998 |title = Michigan State Parks: A Complete Recreation Guide |publisher = The Mountaineers Books |location = Seattle |url = https://books.google.com/books?id=d3aplnJsJnEC |access-date= May 12, 2008 |via = [[Google Books]] |isbn = 0-89886-544-1 |page = 9 }}</ref> The state of Michigan was granted the spring with accompanying land in 1926, under the condition that it be turned into a public park. The state has since acquired surrounding land and expanded the park considerably.<ref name="big"/>

 

Hydraulic pressure forces the groundwater to the surface. It is not known exactly where this enormous volume of water comes from. The spring's pool bowl is similar to other [[sinkhole]]s, except that it is connected with an [[aquifer]] (underground stream) to nearby Indian Lake. The small spring pool was created when the top layer of [[limestone]] dissolved away and collapsed into the cave already created by the underground water.<ref name="Hunt"/>