The territory of Allerona, partially stretching on a plain and partially on hills, abounds with olive trees and is rich in vineyards that represent, since remote times, the most important part of its economy and a remarkable contribution to the production of the famous Orvieto’s wine, already known since roman and etrurian ages.

The ground where Allerona lies, last trace of the Volsinia’s volcanic system, appears variable due to  the rocks variety, of various nature and origins, that mixed one another as a result of the impressive volcanic phenomena that occurred 64 millions years ago.

Marine Pliocene formations (clay, conglomerates and yellow sands) and Eocene ones (sandstone and schist) have been found where then, at end of the Pliocene period, the materials coming from the volcanic eruption overlapped, such as lava and different types of tuff. Also fossil shells from the Pliocene period have been brought to light.