The document describes Carlsbad Caverns, including speleothems like stalactites, stalagmites, and columns found there. It discusses the Big Room, the largest underground chamber in the world at 1.25 miles long and containing 50 basketball courts. Facts are provided about the Mexican Free-tailed Bat, which winters in Mexico and is 9cm long, as well as that bats make up 1/4 of the world's mammal species.

1. Carlsbad Caverns

2. SpeleothemsMade of LimestoneDifferent kindsCave pearlsCave Draperies (Bacon)Stalactites and stalagmitesColumnsFlowstone, and more

3. The BIG ROOMThis is just one part of the big room.Picture taken from: http://upload.wikimedia.org/wikipedia/commons/f/fc/Kartchner_Big_Room.jpg

4. The Big RoomIt has a café and benches in it now.754 feet below the surfaceThe largest underground chamber in the worldPerimeter is about 1 ¼ miles longLike other rooms, it has little pools everywhereSo big, it can fit 50 basketball courts1,800 feet long and 250 feet wide

5. Mexican Free-tailed Bat factsMales live to be about 13-18 years old.Females live to about 12 yrs old.In winter, they migrate to Mexico9 cm longGray or dark brownScientific name: TadaridabrasiliensisCalled free-tail, because their tail is not enclosed in the membrane

6. Mexican Free-Tailed Bat Picture:

7. Bats make up ¼ of all the mammals in the world: