Digital-Desert : Mojave Desert
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Joshua Tree > Nature Trail > Arch Rock

Disappearing Soil

evidence of receding soil levels
In this photo you can see a rusty brown coating on the rocks which is known to geologists as desert varnish. Follow the varnish down toward the sandy soil and you will see a distinct line where the varnish ends and a fresher surface of the rock is exposed. This linear feature graphically illustrates that the soil levels were once this high.

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Disclaimer: Some portions of this project were developed with assistance from AI tools to help reconstruct historical contexts and fill informational gaps. All materials have been reviewed and fact-checked to ensure accuracy and reliability, though complete precision cannot be guaranteed. The aim is to provide dependable starting points and distinctive perspectives for further study, exploration, and research.

These materials are historical in nature and intended for educational use only; they are not designed as travel guides or planning resources.
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