Forche del Diavolo from Vo'

Gustinho's review is agreeable. I would only add that the section between Boccon and the turn towards Via Molini is not unpleasant and offers a few crossings in the shade with good asphalt and a smooth ride. On the other hand, the second part, the one after the intermediate descent, is all in the sun, and while the panorama offers beautiful views of Monte delle Forche and Mount Venda, it is not as pleasant due to the summer heat and the very syncopated course, with stretches at 4 or 5％ and ramps that last a few dozen metres but reach gradients of over 15％. There is no picking up the pace, in short.
At the top, the climb reaches the Ronco area. You can continue with another easy kilometre to Castelnuovo, and from there devote yourself to something more interesting.
Downhill, a few nice bends, the asphalt in good condition and the width of the road allow for fun manoeuvres. Traffic is very limited but not non-existent, given the presence of inhabited houses and a few restaurants, which are easily reached via more comfortable alternative routes.

Starting in Vo' with a slightly uphill road, in Boccon at the church take Via Monte Venda. The ascent is very uneven, and after a short descent towards the middle of the route, it continues somewhat uphill, with two or three short but malignant ramps (16/17％) alternating with less demanding stretches. All in all, it can be done, but I didn't like it much.