From a geological point of view, the soil of Poggio Trevvalle has its origins in the sedimentation occurring between the Upper Miocene and the Pliocene (Zanclean – Piacenzian) eras.

The soil is composed of Pliocene marine deposits (conglomerates, geological unit code ‘PLIB’) contributing to  give Poggio Trevvalle’s wines an unmistakable, slightly salty note.