National Park Service LogoU.S. Department of the InteriorNational Park ServiceNational Park Service
National Park Service:  U.S. Department of the InteriorNational Park Service Arrowhead
Arches National ParkDetail of Double Arch
view map
text size:largestlargernormal
printer friendly
Arches National Park
Site Index
Close up of biological soil crust  

Did You Know?
The dirt is alive! A living crust called "Biological Soil Crust" covers much of Arches and the surrounding area. Composed of algae, lichens and bacteria, this crust provides a secure foundation for desert plants. Please stay on roads and trails to avoid trampling this important resource.
more...

Last Updated: July 25, 2006 at 00:23 EST