The camino in Bate Agua is marked in two directions: the old way along the road and the new way through country paths, much like the options when leaving Venda do Negro.
The preferred path is always the one that takes you away from motorized traffic. In Bate Agua, that means keeping on straight when you get there (the other option being to turn left and follow the old arrows along the road into Netos; a viable option and perhaps the preferred one if there have been heavy rains). Arriving at the first fork, turn left and immediately left again onto a footpath. You will rejoin another small road in a short distance, turn right and follow the curve of the road but you don’t stay on it long so keep an eye open for where the trail diverges again on your left. At the next intersection with a dirt track, turn left and then keep right at a fork a few meters on. This will bring you to a paved road where you turn left and walk into Netos.