It's the normal and almost the only route to summit.
See the main page to reach Puerto Alto from Cañada de la Cruz.
Beginning Mailbox Alto del Obispo Revolcadores
You park in the small parking around the exit of a forest track in right side. Initially you walk across the track turning in a curve to left connecting with another track. You continue the wide way with a lot of attention to the point to leave the track. You see two big cairns of stones in right side that's the beginning of the path in the forest. The way is easy but steepy always following cairns wit attention. Near of the ridge the path goes to right walking under the summit to reach the shoulder at South of the summit. Turning to left you reach the summit of Alto del Obispo (2,014m)
with a geodesic vertex and mailbox (box to send messages to other mountaineers that will climb the summit).
Note: in foggy days it's difficult to discover the path to summit and even you can reach the South summit also with a vertex, but it's Revolcadores (1,999m)
and not the highest point if you don't see the mailbox. Both summits are very near at 500 meters.
Boots. With rain or snow a pair of hiking poles are very useful.
Nothing for the moment.