Following the Tracks of Charlemagne in the Cottian Alps. The Cultural and Geological Heritage of the Franks Trail (Susa Valley, Piemonte, NW Italy)

This paper presents an attempt at the evaluation of the Alpine geoheritage of the Susa Valley (Piemonte region, NW Italy). The area is included in the project for the creation of the 'Cottian Alps Geopark', whose application to the European Geoparks Network is in progress. The Susa valley is a unique and great geological section showing all the structures and rocks involved in Alpine orogenesis. Moreover, it shows outstanding examples of interactions between human activities and processes of the physical environment. We considered these cultural landscapes as a heritage worthy to be known by people and to be exploited by geotourism activities. Therefore, we investigated the local geodiversity, assessed the geoheritage and identified the geosites characterised by a high potential for the enhancement of public understanding of geoscience and for recreational activities. In this paper, we describe the actions and methodologies carried on for creating geo-itineraries and for improving tourism activities and scientific knowledge. In particular, we focus attention on the Franks trail, a 60-km-long route crossing the Geopark territory, which follows the path blazed by Charlemagne in 773 AD as he attempted to avoid the Longobard army. The trail runs through many sites which tell about natural and cultural heritage. Our evaluation project makes the trail suitable as a 'cultural extension' of the 'Via GeoAlpina', an international project that aims to show the wonders of alpine geology and geomorphology.