Ferrata Alleghesi. It's the most technical part in my opinion because it's really vertical (even 90º in some stairs) but it's not dangerous thanks to the stairways. This section is just in the middle of ferrata and you need use the arms with strong to progress. The upper part is easier and you probably don't want to return from this point... you must climb it "yes or yes". After that it's only necessary to be patience to reach the summit in 2h more. Aug 2011.