• America's First

    Devils Tower

    National Monument Wyoming

Park Statistics

YEAR

TOTAL VISITS

PERCENTAGE CHANGE

2009

393,093

+16.71

2008

338,898

+4.22

2007

324,388

-3.90

2006

336,264

-9.76

2005

371,309

-4.53

2004

388,511

-1.57

2003

394,600

-3.43

2002

408,143

+8.71

2001

372,596

-4.24

2000

388,378

-1.78

1999

395,296

-1.50

1998

401,242

+2.34

1997

391,844

-12.19

1996

439,599

+5.00

1995

417,631

-10.33

1994

460,783

+6.14

1993

432,469

-5.94

1992

458,140

-0.55

1991

460,468

+6.19

1990

432,185

-



Did You Know?

Close up of phonolite

Devils Tower is made of phonolite porphyry. Phonolite refers to the ringing of the rock when a small slab is struck, and its ability to reflect sound. Porphyry refers to its texture, large crystals of feldspar embedded in a mass of smaller crystals.