While the north of Argentina is scorching hot, the south is not just cool—it's literally a glacier. Perito Moreno. Even though it's a pleasant +15°C outside, the massive chunk of snow and ice doesn't fully melt. The photo only shows the upper part. There's even more ice underwater, and it reaches all the way to the bottom.

The glacier has completely blocked the lake several times. This caused flooding on nearby farms. In 1939, the military even bombed the glacier hoping to unblock the lake, but it didn't work. Eventually, a few months later, the ice retreated and water levels returned to normal.

This is one of the most accessible glaciers in the world. For a reasonable amount of money, you can walk on it. They'll bring you by ferry, give you a guide, crampons, and explain how to walk properly. You can't go far—they only take you along the edge. For a hike several kilometers deep, they charge a lot more. I chickened out, even though I really wanted to do it.

The guide told me that in recent years the glacier has melted significantly, and the current edge is dozens of meters short of where it was a decade ago. It doesn't look like this trend will change anytime soon.