My friend Sabine is ascending the via ferrata Tridentina, Dolomites Mountains (Italian Alps).

On the hardest passages, steel ladder steps and stemples are bolted to the vertical rock wall.

The climbing route involves ascending more than 2,500 feet (750m) of almost vertical cliff, equipped with cables and occasional metal ladders or steps.

Via Ferratas are climbing routes permanently equipped with a safety cable. For more info about via ferrata, go to en.wikipedia.org/wiki/Via_ferrata.

For more info about the Brigata Tridentina via ferrata, go to it.wikipedia.org/wiki/Ferrata_Tridentina.

For more info about the Dolomites, go to en.wikipedia.org/wiki/Dolomites.