High on the vertical rock faces of Monte Cristallo, in Italy's Ampezzo Dolomites, sits one of the most improbable buildings in the Alps: a small stone-and-timber shelter wedged directly into the cliff at roughly 2,760 meters (about 9,050 feet). Known today as the Buffa di Perrero bivouac, it dates back to World War I, when Italian and Austro-Hungarian troops fought one another … [Read more...] about The World War I Shelter Hidden in the Cliffs of Monte Cristallo