Glaciar Perito Moreno and the moving wall of ice at El Calafate
Published on 08/30/2026 at 13:19 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS
Glaciar Perito Moreno is one of the most striking sights in Argentine Patagonia, a massive wall of pale blue ice meeting the milky waters of Lake Argentino west of El Calafate. Set within Los Glaciares National Park in Santa Cruz Province, it forms part of the Southern Patagonian Ice Field, a high plateau of ice shared by Argentina and Chile that ranks among the planet’s largest reserves of fresh water.Southern Patagonian Ice Field
An advancing Patagonian giant
Glaciar Perito Moreno descends from the Andes for about 30 km (19 miles) before ending in an almost vertical ice front in the southern arm of Lake Argentino.30 km in length The glacier’s visible face rises around 70 to 74 m above the lake surface, with ice extending to roughly 170 m below, giving a total ice thickness at the front of well over 200 m.height and depth of the face From the shore, the front reads as a jagged skyline of seracs, deep crevasses and overhangs, with the surface broken into ridges and towers rather than a smooth curtain.
The glacier covers around 250 km², with the calving front stretching for about 5 km across the lake, so the visitor looks not at a single peak but at an entire frozen landscape pressed up against the water’s edge.surface area and width Glaciar Perito Moreno is notable among large valley glaciers because it is in near?equilibrium, with the rate of ice loss balanced by the flow of new ice from the ice field, so its front holds a relatively stable position instead of steadily retreating.equilibrium behaviour Over the years the glacier’s edge has periodically advanced far enough to meet the opposite lakeshore, creating a natural ice dam across the channel leading to the Brazo Rico arm of Lake Argentino and setting up the conditions for spectacular rupture events when the blocked water finally breaks through.natural ice dam phenomenon
From Andean icefield to Lake Argentino
The glacier forms part of the eastern margin of the Southern Patagonian Ice Field, which lies high in the Andes at elevations of more than 2,000 m and feeds numerous outlet glaciers into Argentina and Chile.Southern Patagonian Ice Field setting Glaciar Perito Moreno flows down towards Lake Argentino and terminates at about 180 m above sea level where its ice front meets the water; blocks of ice periodically detach from the face and fall into the lake, a process known as calving, sending up plumes of spray and launching icebergs that drift away on the grey?green surface.lake level and calving
Los Glaciares National Park, created in the twentieth century to protect this region, has been on the UNESCO World Heritage List since 1981, recognising both the extent of the ice and the dramatic mountain and lake scenery around it.UNESCO status of Los Glaciares Within the park, Glaciar Perito Moreno lies in the southern sector facing the Magallanes Peninsula, with viewpoints and infrastructure concentrated along this shore rather than on the icefield plateau itself.location within the park From El Calafate the glacier is reached by road heading west through open Patagonian steppe towards the darker band of the Andes on the horizon, the mountains gradually filling more of the skyline as the road approaches the national park boundary.road access from El Calafate
Walkways, viewpoints and the scale of the ice
On the Magallanes Peninsula a network of metal walkways and viewing platforms has been laid out on the rocky slopes opposite the ice front, creating a series of vantage points at different elevations and angles along the shoreline.walkways on the peninsula From higher terraces visitors see the glacier as a broad expanse, tracing its path back into the mountains where it merges with the icefield, while lower platforms bring the experience closer to the crashing sound of calving and the detail of the fractured ice wall.
Across the face, the ice surface shows different shades of blue and white, with darker bands where older, compressed ice comes to the surface or where debris has been incorporated into the flow. The lake below is dotted with smaller icebergs and slabs of broken ice, some grounded near the shore, others floating away into the wider basin of Lake Argentino. Named after the Argentine explorer and geographer Francisco Moreno, who worked in Patagonia in the nineteenth century and contributed to the delineation of the border with Chile, the glacier carries his honorific “Perito”, meaning “expert”, into the modern era.Francisco Moreno and the name
Visiting Glaciar Perito Moreno: what travellers from Western Europe should know
- Glaciar Perito Moreno lies west of El Calafate in southern Argentina, along a paved road that runs into Los Glaciares National Park towards the Magallanes Peninsula.
- The main viewpoints stand on stepped walkways above the rocky lakeshore, with sections connected by staircases and ramps that involve sustained walking and changes in gradient.
- Boat trips on Lake Argentino depart from harbours within the park and approach the glacier’s southern face, giving an on?water perspective on the height and width of the ice wall.
- The glacier and its surroundings sit at a relatively low altitude compared with high Andean passes, but the combination of Patagonian weather and exposed walkways calls for layered clothing.
- The official language is Spanish and the currency is the Argentine peso. Entry requirements depend on your nationality; UK travellers can check the FCDO travel advice at gov.uk/foreign-travel-advice, Irish travellers the Department of Foreign Affairs at ireland.ie.
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Frequently asked questions about Glaciar Perito Moreno
Where is Glaciar Perito Moreno located?
Glaciar Perito Moreno lies in Los Glaciares National Park in Santa Cruz Province, in the southwest of Argentina, to the west of the town of El Calafate.
What can visitors expect when they reach the glacier?
Visitors encounter a multi?kilometre ice front rising around 70 m above Lake Argentino, with walkways and viewpoints on the Magallanes Peninsula facing the crevassed wall of ice.
What makes Glaciar Perito Moreno distinctive among large glaciers?
Glaciar Perito Moreno is notable for its relatively stable front, its periodic damming of the Brazo Rico arm of Lake Argentino and its accessible walkways directly opposite the towering ice face.
