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Sunset Crater Volcano National MonumentPlant growing in lava field
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Sunset Crater Volcano National Monument
Springs and Seeps
A fern takes root where extra moisture is available

A fern takes root where extra moisture is available

You won’t often see water at Sunset Crater Volcano National Monument. There are no streams or springs, and ground water is at least 1900’ deep. Most of the moisture from rain or snow filters rapidly down through the cinders. Water may collect briefly in hollows on the lava flows, but is soon channelled away through cracks. Some of this water finds its way to the edges of the lava flow, forming seepage areas that support isolated islands of vegetation. The plants found in these places are especially adapted to grow in fast-draining volcanic soils.
Sunset Crater penstemon in bloom  

Did You Know?
The Sunset Crater penstemon (Penstemon clutei) is found only on cinder deposits within the San Francisco Volcanic Field, including Sunset Crater Volcano National Monument, in northern Arizona.

Last Updated: August 21, 2006 at 13:28 EST