V. Geological and
Biological Information on Crater Lake Area
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E. Points of Geological Interest
in Crater Lake National Park
8. Pumice Desert
A broad flat in the northern section of the park,
this desert was covered with pumice and ash over 200 feet deep in some places by
the explosion of Mount Mazama. It has only started to be invaded by scattered
lodgepole pines. Due to its scarcity of organic matter, few plants have taken
hold to further enrich the soil.
