The Valscura lakes and the Bassa del Druos pass

The mass of rocks over which the water falls is a typical example of a glacial rock step. During the glaciations it formed the lower limit of the lake at the foot of the glacier. A tongue of the glacier extended beyond the step.

Starting at the fork near the Valasco Refuge, the route follows former military road 452 "Pian del Valasco - Lower Lake Valscura", built in the early thirties to serve the Valscura defense system. In order to make it possible to drive transport vehicles on the road, which was not much more than a wide mule track, much of the 1909 military road had to be expanded, being too narrow to meet the new needs.

Since the end of the eighteen hundreds(an inscription on the remains of a shelter reads "3° Compagnia Alpini, 1888") Lower Lake Valscura was chosen as the site where troops were garrisoned to defend the strategic pass of Bassa del Druos. Beginning in 1888, when barracks were erected to house 140 soldiers and two officers, for almost fifty years buildings were constructed on this site, until the entire complex was finally transformed into an armory, officially known as A131,containing munitions, explosives and artillery pieces.

The barracks are named for Massimo Longà, Captain of the Alpine Corps, who died on Monte Ortigara on 10 June 1917 (to be precise, on an Army Corps of Engineers map, the Rifugio's name is indicated as Massimo Mongà, differently from the inscription on the plaque over the main entrance). The barracks building is an imposing structure, built, according to documents of the Engineering Corps, in 1903. Other sources give the date of its construction as between 1916 and 1917, thanks to the forced labor of Austrian prisoners captured on the Eastern front, but if the Engineering Corps documents can be believed, it is more probable that the barracks were only restructured during the WWI years.

Near the Bassa del Druos there are the ruins of a shelter and the Druos Battery, a defensive military gun emplacement in a cave of the Vallo Alpino. The artillery battery, realized with minimum investment in the mid-thirties, consisted of 4 100/17 howitzers captured from the Austrians in WWI. The guns were positioned in the cave without any shielding whatsoever: there wasn't even a command room inside. Two of the 4 galleries where the cannons were placed can still be seen clearly, but the entrances to the other two have been obstructed by landslides.