An accurate study of geographical maps contains the traces of the history of the Alpine territory. Monviso, which had a tunnel drilled through it in 1480, appeared on maps very early. The same could be said for Mount Rosa, which was crossed by its inhabitants already in medieval times southward. In contrast, Mont Blanc, which was without major communication channels, appears with its name only at the end of the seventeen hundreds. It was the same for Mount Matterhorn, first forgotten and then confused with other summits.