Originally Posted by Smallaxe
There are areas in the midwest that topsoil is 6' deep, and it was that way when farming began in those regions... your area may be part of that legendary environment...
Legendary, of the fantasy type.
Topsoil: The layer of soil moved in cultivation. Frequently designated as the Ap layer or Ap horizon. See also surface soil. (ii) Presumably fertile soil material used to topdress roadbanks, gardens, and lawns.