From the Malcesine Monte Baldo uphill cable car station, walk South, cross the Baita dei Forti Square and take the dirt road on the left which first presents a light descent and then an ascent that runs alongside a ski slope until the Prà Alpesina chair lift station.
Keep going South, along Mount Baldo ridge while you enter in the reserve. Go straight on until you reach the little stone men that you can find on the right.
You can come back following the same route.
The Malcesine Monte Baldo cable car uphill station is situated in Tratto Spino. You can find ticket costs and the cableway opening hours at this link.