You know what it looks like… but what is it called?
TAKE THE QUIZ“lateritic soil”
We have one entry that includes the term lateritic soil.
reddish-brown lateritic soil
noun: any of a group of zonal soils developed under humid tropical forest vegetation that have granular dark reddish brown surface soils underlain by reddish friable clay B-horizons and red reticulately mottled lateritic parent material
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Merriam-Webster unabridged