 The location has been chosen as trigonometrical station in the Gauss–Boaga cartographic projection, giving rise to che datum "Roma 40".Although it is the highest hill in the modern city of Rome, Monte Mario is not one of the proverbial Seven Hills of Rome, being outside the boundaries of the ancient city.Excavations carried out in the Cartoni estate, close to Monte Mario, have found a flint tool, some splinters of the same material and animal teeth.