Cascata di Val Nera is one of those scenic waterfalls that are typical for Italy. Cascata di Val Nera can be found in Valle Vago (on a road called Via Forcolo) south of Livigno in the region Lombardia.
From Livigno it is a short drive to Alpe Vago where you park the car. I think that it also possible to camp here. From here it is a 2 kilometer walk (30 minutes) on a trail along the river Vago.