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Arches National Park
Site Index
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![Close up of biological soil crust Close up of biological soil crust](https://webarchive.library.unt.edu/eot2008/20090507222858im_/http://www.nps.gov/imr/customcf/apps/CMS_HandF/Pictures/ARCH_soilcrust1.jpg) |
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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.
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Last Updated: July 25, 2006 at 00:23 EST |