2.  Mamoth Cave Underground map

3.  Mammoth Cave

6. Mammoth Cave National Park, located in Mammoth Cave, Kentucky became an official National park on July, 41 1941 because It was, and still is, the largest cave system that is not underwater in the world. Scientists believe that only one fifth of it is explored. On October 27, 1981 Mammoth cave became a World Heritage Site. A World Heritage Site is something listed by the United Nations Educational Scientific and Cultural Organization as being a thing of significance.

7.  325 million years ago an ocean covered what is now America. It laid down a layer of limestone more than 600 feet thick. After that, a thick layer of sandstone and shale was deposited by an ancient river. The river eroded a passage beneath the earth. As the river dried up, the cave got bigger and bigger. It is still most likely growing to this day.

8.  Mammoth Cave is made out of a layer of aged limestone topped by a thick layer of sandstone. This combination makes for a surprisingly sturdy rock, perfect for a large cave system.

9. Mammoth Cave suffers from both air and water pollution from industrial development. An organization called I&M was established to help the environment at Mammoth Cave

10.  There are many landforms in Mammoth Cave. They include  The Bottomless Pit- The Bottomless pit is a gaping drop said to be so deep that you can’t see the bottom  The river Styx- In Greek Mythology The river Styx separated the land of the living from the Land of the dead  The Rotunda Room- The Rotunda Room is a large circular smooth room in Mammoth Cave  And Many More

11.  The most common rocks in mammoth cave are sandstone and limestone. The cause for this goes all the way back to when Mammoth Cave was first formed. The ancient ocean over Kentucky left sedimentary rock, these sediments were mostly limestone and sandstone.

12.  Mammoth Cave is growing every day. The park might one day expand outside it’s own borders if it hasn’t already. But scientists are exploring it faster than it grows. One day they will reach the end of Mammoth Cave, the largest cave in the world.

13.  Scientists use many tools to explore Mammoth Cave, These devices include seismographs, which are used to find nearby earthquakes in order to evacuate the park. Explorers also use flashlights to explore new areas.

14.  "Us Map with Mammoth Cave." Http:pix.epodunk.com/locatorMaps/ky/KY_4148.gif. Epodunk.com, n.d. Web. "Mammoth Cave Relief Map." N.p., n.d. Web. "Mammoth Cave Topographical Map." Mammoth Cave Topographical Map. Csus.edu, n.d. Web. "Underground Map Of Mammoth Cave National Park." Underground Map Of Mammoth Cave National Park//. Wikimedia.org, n.d. Web.  Mammoth Cave River Styx. Digital image. Https://s-media-cache-ak0.pinimg.com, n.d. Web. 15 Dec. 2015.  Digital image. Mammoth Cave Bottomless Pit. Https://amoralegria.files.wordpress.com, n.d. Web. 15 Dec. 2015.  Mammoth Cave Rotunda Room. Digital image. Http://www.nps.gov, n.d. Web. 16 Dec. 2015..  Digital image. Http://cavingnews.com/, n.d. Web. 16 Dec. 2015..  http://www.travelaroundusa.com/uploads/2/4/0/0/24002860/472843115_orig.jpg http://www.travelaroundusa.com/uploads/2/4/0/0/24002860/472843115_orig.jpg  http://www3.epa.gov/visibility/parks/images/maca_v.gif