Blockhaus is not going to be an easy stage... people mistakenly think a short stage like this will be easy.. it is not, it will be very hard.. it will just be contested at lighting speed... think 50+ km/hr for 60 kms to the base of the climb followed by a lung busting 20km climb (twice as long and has high as today)... this will be one of the hardest days of the Giro.
the climb up to Mt Vesuvius is just as hard as today.. yes the preamble is not as hard but it's perfect for the adventurous team that can get rider(s) in the early break, get their GC hopeful to go on the penultimate climb and TTT to the base of final climb and then launch them on the final climb.. this is how Cunego won his Giro..