This section is located on the northern side of the garden, and is the only section developed on a slope (this raised mound was artificially created with rubble). Bordered by the old town walls, the area contains many deciduous woody plants, almost all native and representative of the flora of the Apennines around Bologna. The eastern side, with an arid micro-climate and sun exposure contains a collection of shrubs and evergreen trees typical of the Mediterranean region. The western side is moister and hosts a number of woodland representatives usually found at higher altitudes.