Glaciar de los Argentinos, Glacier formation in Mount Pissis, Catamarca and La Rioja, Argentina.

Glaciar de los Argentinos, also called Glaciar Norte, descends the entire northeastern slope of Mount Pissis, on the border of Catamarca and La Rioja provinces, embracing the central summit. Its lower part shows a small serac barrier and a nearby crevasse field; at 5,100 m the ice thins and continues through the ravine to the foot of the mountain at 4,600 m, where the Mar del Plata base camp stands.

The area was explored through multiple expeditions in the late 20th century, which led to its current naming. The distinction between this and other ice masses on the mountain emerged from the work of these early researchers.

The glacier's name comes from Argentine expeditions whose route climbs it from 4,600 m to the summit; the southern glacier was later called Glaciar de los Italianos after its first Italian ascensionists. The Mar del Plata base camp sits at its foot at 4,600 m, and the Reinhard route crosses the upper glacier.

Access is gained through established mountaineering routes that depart from the Mar del Plata base camp. Visitors should prepare for extreme elevation and harsh alpine conditions, as the route passes through high mountain terrain.

A striking feature is the notable narrowing of the ice mass at approximately 5,100 meters elevation, where the width decreases significantly. This natural constriction is often used by mountaineers as a distinctive orientation point during ascent.