Lago Argentino

Everyone who comes to this part of Patagonia comes for Perito Moreno, and almost no one talks about the lake it’s feeding into, which struck me as an odd oversight the moment I actually got out on the water. Lago Argentino is the largest lake in Argentina, a sprawling glacial body covering close to 1,500 square kilometers, and its color alone justifies a morning — a dense, milky turquoise produced by rock flour, fine sediment ground out by glaciers upstream and suspended in the water in concentrations high enough to change how light passes through it. I’d seen that color in photographs and assumed it was exaggerated. It isn’t.

Lia and I took one of the boat excursions out of Puerto Bandera, on the lake’s western arm, heading toward the Upsala and Spegazzini glaciers rather than Perito Moreno itself — a route that gets a fraction of the visitors and, in my opinion, delivers more genuine astonishment per hour. The boat threaded between icebergs that had calved days or weeks earlier, some the size of small buildings, their undersides carved into arches and hollows by wave action, glowing an almost electric blue where the ice was densest. Our guide cut the engine at one point and let us drift beside a berg for a few minutes in total silence except for the water lapping against it. Nobody on the boat said anything. It felt like the correct response.

Spegazzini turned out to be the highlight I hadn’t expected — a glacier with the tallest ice face in the area, rising some 130 meters directly from the water in a wall so sheer it seemed almost architectural. Upsala, further along, has retreated dramatically in recent decades and is now often inaccessible depending on ice conditions in the fjord, which the crew explained with a kind of resigned professionalism that told me this was a conversation they’d had many times before. Even partially blocked, the approach through a channel choked with drifting ice was one of the more surreal stretches of water I’ve traveled through — the boat nosing gently past pieces of ice older than any city either of us had ever lived in.

The lake itself, beyond the glacier excursions, has a quieter life too. Puerto Bandera and the estancias scattered along its shores run sheep and cattle on land that borders one of the most dramatic ice fields outside the poles, and there’s something almost comic about that juxtaposition — gauchos on horseback a few kilometers from calving glaciers, going about entirely ordinary agricultural business. We stopped for a late lunch at a small lakeside spot on the drive back to El Calafate, and ate trout pulled from water that, an hour earlier, had been full of icebergs.

When to go: October through April, matching the wider Patagonian season. The Upsala and Spegazzini boat routes depend heavily on ice conditions and can be altered or canceled at short notice, so build slack into your schedule if that specific excursion matters to you. Mornings tend to bring the calmest water and the clearest views across to the ice fields.