A mule walks next to a landslide at the Farallones Natural park near Cali, Valle del Cauca, on November 28, 2024. In the mountains, often covered in fog, irregular armed groups have been profiting for half a century from illegal gold mining using mercury, a heavy metal that pollutes the water of 2.2 million inhabitants of the city of Cali. (Photo by JOAQUIN SARMIENTO / AFP)