A sub-class of Soil Profile for profiles not phisically observed. A “derived soil profile” (DerivedSoilProfile object in the model) is a soil profile that cannot be located in a soil plot. It corresponds to the spatial extent of a soil type that has been observed in one or several observed soil profiles. The derived soil profile has property values that could be derived (e.g. averaged) from the values of the corresponding properties of one or more observed soil profiles. The derived soil profile can be characterized by the same properties as those of the observed soil profiles, but it is understood that the values for these properties have been derived or determined by expert judgment or calculation. A derived soil profile can be seen as a characterisation of a Soil Typological Unit (STU), or Series, as recognized in the European Soil Geographical Database and other soil databases at national or regional levels. A derived soil profile is not necessarily linked to observed soil profiles, in which case it represents a hypothetical soil profile.