Pampa de Leñas is the first campsite on the Vacas Valley approach to Aconcagua, situated along the Río de las Vacas at roughly 2,800–3,100 meters above sea level.

Trekkers reach it from the Punta de Vacas trailhead via a well-marked trail that follows the river through a dramatic canyon, typically a four-to-six-hour hike. The camp sits beneath high cliffs that provide shelter and a relatively peaceful setting.

Drinking water is available from a nearby stream, and camping is permitted in designated areas. A park ranger post operates at the camp, and some expedition agencies offer food services here.

Pampa de Leñas serves as the standard overnight stop before continuing to Casa de Piedra and ultimately Plaza Argentina base camp. The hike in is generally hot and exposed, so adequate sun protection and water carry are strongly recommended.