What does HD mean in Geology?

high desert

A high desert refers to a region that is typically located at a higher elevation and has arid or semi-arid climate conditions. It is characterized by sparse vegetation, rocky terrain, and relatively low precipitation levels. High deserts are often found in mountainous areas or plateaus and can be found in various parts of the world, including the western United States, Central Asia, and Southern Africa. These regions are known for their unique landscapes and diverse flora and fauna adapted to withstand harsh environmental conditions.

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