Historical-naturalistic excursion leading to the discovery of one of the most precious and spectacular natural jewels of the Carnic Alps. The itinerary unfolds along a ring-route that alternates between woods and meadows and leads to the glacial basin that hosts the Bordaglia Lake, located within the Bordaglia-Fleons Faunal Oasis. There will also be an opportunity to talk about the history that has characterised these places, regarding the events that took place mainly during the Great War and, in part, also during the Second World War.