Ephemeral pools (potholes) in the Needles District
To many, the most outstanding natural features of Canyonlands are the park's geologic formations. In each of the districts, visitors can see the remarkable effects of millions of years of erosion on a landscape of sedimentary rock.
Two unusual natural features are common in Canyonlands and intrigue both scientists and visitors: biological soil crust and ephemeral pools (potholes). Biological soil crust is a living groundcover that forms the foundation of high desert plant life.
Potholes are naturally occurring basins in sandstone that collect rainwater and wind-blown sediment. These potholes harbor organisms that are able to survive long periods of dehydration, and also serve as a breeding ground for many high desert amphibians and insects. Both of these communities are very vulnerable to human impacts.
From Dust to Crust Scientists have discovered that airborne dust can be extremely beneficial when it settles. more...
How Deep is the River? Scientists find an unexpected answer to a very common question. more...
Jurassic Journey Travel back in time to the shore of a Jurassic lake. more...
Did You Know?
Desert bighorn sheep live year-round in Canyonlands. These animals make their home along the rivers, negotiating the steep, rocky talus slopes with ease. Once in danger of becoming extinct, desert bighorns are making a tentative comeback thanks to the healthy herds in Canyonlands.
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