Stone in space and time. Forgotten stone bridges that have stood there for centuries, connecting the old paths of Mount Athos, hidden within its lush vegetation. These marginalized constructions have captured the interest of a researcher who walked the paths through summers and winters, living in its monasteries. The book at hand is the result of many years of research and a comprehensive study of the unpublished stone bridges, even the destroyed ones, found while wandering through the monasteries of Mount Athos. They are recorded and presented for the first time, alongside significant typological and chronological tables, and many photographs that the author captured during his countless travels.