The Cuesta del Obispo is a zigzagging and steep section of Provincial Route 33, located between the Maray area of the Escoipe ravine and the Piedra del Molino (3348 ), in the province of Salta, north of the Argentine Republic, connecting the valley of Lerma with the high Calchaquí valley.
(Wikipedia)
The climb is about 34km and 1630m of elevation gain (average 4.8% grade). There are no services and no water. As of 2023, it is unpaved.