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Pennsylvania is a geologically diverse state. The soil can definitely vary across short distances.

Super helpful, thank you!

Yes, and Western PA has the Poconos mountain chain, so various geologic strata are exposed in close proximity.

Poconos are actually eastern PA. There are also mountains in western PA, but I don't know their names without looking it up.

The Allegheny Mountains are in western Pennsylvania.

The Poconos are in northeastern Pennsylvania.