Santa Cruz is a province of two edges with four hundred kilometres of wind in between

On the map of Argentina, Santa Cruz is the second-to-last step southwards: 243,943 square kilometres, the country's second-largest province, bigger than the United Kingdom. The 2022 census counted 337,226 people living there, which works out at 1.4 inhabitants per square kilometre. Those figures are worth keeping in view, because they explain almost everything else.

They explain, for instance, why a journey through Santa Cruz consists mostly of crossing. The cities are on the coast, the mountain villages sit right against the glaciers and, in between, the road climbs and drops across plateaus where the only movement is the tussock grass leaning in the wind. This article travels the province from edge to edge: the ice first, then the steppe that separates, and finally the sea.

01 A map with an empty middle

Almost everyone in Santa Cruz lives on the Atlantic shore. Río Gallegos, the capital, Caleta Olivia, Puerto Deseado, Puerto San Julián and Puerto Santa Cruz are towns of sea, oil or fishing. At the opposite end, six hundred kilometres away, are El Calafate and El Chaltén, which live not off the land but off ice and rock. Between them lie Gobernador Gregores, Perito Moreno, Los Antiguos and a network of estancias separated by dozens of kilometres of wire fence.

One fact sums up this shape. The Santa Cruz River, which crosses the province from west to east, has human settlements only at its two ends: near its source, around El Calafate, and at its mouth, at Puerto Santa Cruz and Comandante Luis Piedra Buena. Along the 385 kilometres in between there is not a single town. The emptiness is not a traveller's impression; it is in the census.

02 The edge of ice

The west of Santa Cruz does not end in a mountain range but in an ice field. The Southern Patagonian Ice Field spills over to the Argentine side in glaciers that drop straight into two enormous lakes, Viedma and Argentino. Lago Argentino covers about 1,400 square kilometres, sits only 187 metres above sea level and reaches 500 metres in depth. It is the largest lake lying entirely within Argentina, and its milky colour, somewhere between turquoise and grey, comes from the rock dust carried down by the ice.

The Perito Moreno glacier is the visible face of that edge. Its front is about five kilometres wide and rises between 60 and 74 metres above the water. For decades it was famous for something unusual: it did not retreat. It advanced until it touched the Magallanes peninsula, sealed off one arm of the lake, the dammed water rose several metres and, every few years, the ice dam broke with a roar that drew thousands of people. The last confirmed rupture was in December 2019.

That is changing. A study published in 2025 measured that the surface of the front, which had been lowering by 0.34 metres a year between 2000 and 2019, began losing 5.5 metres a year between 2019 and 2024, and that over the same period the front retreated by about 800 metres. In 2026 measurements kept recording rapid losses. Whoever leans over the walkways today is looking at a wall that long seemed to be the exception and no longer is. That is part of what makes this place different: here the province's most stable landscape has a date on it.

03 A smoking mountain and a village from 1985

Two hundred kilometres north of El Calafate, Lago Viedma ends in a valley where the west wind meets a wall of granite. The main peak stands 3,405 metres high and the Tehuelche called it Chaltén, «smoking mountain», because it almost always has a cloud snagged on its summit. On the maps today it appears as Fitz Roy, but the old name survives in the village at its foot.

El Chaltén was founded on 12 October 1985 and is the youngest village in Argentina. It has no historic centre because it has no history other than the mountain. The streets end in trails: from the last house you walk straight out to Laguna Capri, Laguna Torre or Laguna de los Tres, with no car or transfer in between. The day begins by looking at the sky, because the mountain decides whether it will be seen or not, and the conversation in any bakery is the same: whether Fitz Roy «opened up» today.

That is what sets El Chaltén apart from other mountain villages: here the village is the hallway of the walk. You sleep four hundred metres from the trailhead and come back to the main street with moraine dust on your boots. The whole place is organised around a single question, which is whether the summit is visible today.

04 The river that crosses the void

The Santa Cruz River rises in Lago Argentino and runs 385 kilometres to the Atlantic. It carries an average flow of 790 cubic metres per second, milky water brought down from the glaciers, and runs along a valley between three and fifteen kilometres wide that opens in the middle of the plateau. It is the last great river in Patagonia without dams.

Its history explains how the province was entered: by water, not by land. In April 1834 the brig Beagle anchored at its mouth and Captain Robert FitzRoy decided to go upriver in search of its source. Twenty-five men in three boats, the young Charles Darwin among them, pushed upstream for sixteen days, hauling the boats on foot against the current, some 230 kilometres. On 4 May, with supplies running low, they turned back without having seen the lake. They were very close: Lago Argentino was reached and named by Francisco Moreno in 1877.

That sequence, sea first and lake later, is the sequence of the whole province. Santa Cruz was known from the coast, and the interior took generations to let itself be travelled. Even today, the only bridge of settlement between the two edges is that valley, and it is almost empty.

05 The steppe and what is asked of it

Between the ice and the sea, the province is a succession of stepped plateaus, basalt canyons and lagoons that appear and vanish with the seasons. What holds it all together is the wind. It blows from the west, almost without rest, and the first thing a newcomer learns is to open the car door with both hands. Shrubs grow leaning towards the east; estancias are built with their backs to the west.

The steppe was settled for a single purpose: sheep. The estancias, with their main house, their shearing shed and their outposts scattered across the land, were the way to populate a territory that would not take crops. At its peak the province held some six million head; today around two million remain. Volcanic ash, droughts, wool prices and pumas have been emptying fields that were already nearly empty. Some estancias have become something else: the one that occupied what is now Monte León National Park had 40,000 sheep in the 1920s; today it protects some 46,000 pairs of penguins.

For the traveller, the steppe is crossed on Ruta 40, which in Santa Cruz alternates asphalt with stretches of gravel still under construction, and on gravel provincial roads. Between one town and the next, two or three hours can pass without meeting anyone. What you do meet are guanacos, Darwin's rheas and, on the lakes, flamingos. Here the silence is not a metaphor: it is distance measured in litres of fuel.

06 The hands in the canyon

In the north of the province, the Pinturas River has cut a canyon into the basalt plateau. On one of its walls, beneath a rock overhang, there are hundreds of hands painted in negative: the hand pressed against the stone and the pigment blown around it. Researchers counted 829 left hands and only 31 right ones, which suggests that almost everyone held the tube in the right hand. The oldest paintings are about 9,300 years old and the most recent about 1,300; they are the oldest in southern South America, and UNESCO listed them as World Heritage in 1999.

What makes this place a discovery is its position. The hands are in the centre of the province, in the part the census now shows as empty, and they are the oldest human trace in Santa Cruz. For nine millennia that canyon was a passing place for hunters following the guanacos; the present-day towns are less than a hundred and fifty years old. Put another way: in Santa Cruz the people are new and the signs are old, and they lie exactly where nobody lives today.

07 What the plateaus keep

The plateaus also keep a longer kind of time. Near Jaramillo, in the centre-east of the province, there is a petrified forest of Jurassic araucarias about 150 million years old. The trunks, some of them tens of metres long, were buried under volcanic ash and now lie on a plain of ochre stone with their growth rings still legible in the cuts. They are testimony to a humid, temperate climate in the very place where it now barely rains.

And in the north-west, on the Lago Buenos Aires plateau inside Patagonia National Park, the high lagoons hide a bird the world did not know until 1974: the hooded grebe, a diver that nests only in these plateau lagoons and nowhere else on the planet. Around 700 to 800 individuals remain. In 2026 it nested inside the park again after ten years without records, with nine pairs and nine chicks. It is a good image of the province: its rarest thing is in the hardest place to reach.

08 The edge of the sea

The east of Santa Cruz is a coast of yellow cliffs, huge tides and inlets that run far inland. It was the first edge the world came to know. In March 1520 Ferdinand Magellan's expedition anchored in the bay of San Julián and spent the southern winter there; it was on this coast that his chroniclers described the Tehuelche and called them «Patagones». Fifty-eight years later, in June 1578, Francis Drake entered the same bay and wintered there too. In 1586 Thomas Cavendish sailed into the inlet further north and called it Port Desire after his ship: that is where Puerto Deseado gets its name.

The Ría Deseado is a rarity: an old river channel invaded by the sea along 42 kilometres, with islets where cormorants nest and, on Isla Pingüino, a colony of rockhopper penguins, the ones with the golden eyebrows, which on the American mainland are found in very few places. Charles Darwin was here on 23 December 1833, four months before going up the Santa Cruz River.

Further south, Monte León became in 2004 the country's first coastal national park: 62,169 hectares and some 30 kilometres of shoreline where a colony of around 46,000 pairs of Magellanic penguins occupies land where sheep once grazed. The Santa Cruz coast is like that: what was an estancia becomes a park, and the towns live alongside the oil and the fishing boats. It is an edge that looks outwards, to the sea that discovered it.

09 What a few days here feel like

The first adjustment is one of scale. A «short» drive is three hours; a whole day can be going to a single place and back. In summer the light helps: in December the sun sets after ten at night in El Calafate, and dinner, almost always lamb roasted on a spit, the meat spread open crosswise beside the embers, is eaten with daylight still in the window. The second adjustment is the wind, which turns every plan into a hypothesis.

The third is subtler. At the glacier, people stay on the walkways for hours doing nothing but waiting for a block of ice to break off. First comes a deep creak, then a wall falls, and finally the wave arrives. In El Chaltén you wait for the cloud to release the summit; on the steppe, for a guanaco to appear on the ridge. Santa Cruz teaches you to wait, and to accept that the mountain or the ice will not always grant what you came for.

What tends to stay in the memory is not a single image but the contrast between the two edges and the time in between: the blue wall of the glacier, the yellow cliff above the Atlantic and, between them, those hours of gravel and wind when the map looked empty and in fact held the oldest hands in the southern continent. Santa Cruz is not understood by what it has at each end, but by the distance that separates the two.