Alcove, spring, and ruins In the forest on the east slopes of Corna Frea, path 405 runs past this interesting spot - a rocky alcove that contains a spring, picnic table, and what appears to be some well-preserved ruins of a fortification from WWI.
This image is from the presentation "Via Ferrata - Protected Climbing Paths in the Dolomites - Via Ferrata Fausto Susatti".