The Humboldt Current is a current that comes up from the south and off the coast of what is modern-day Peru for the most part. It brings all these nutrients from the bottom of the ocean. And what it does is it makes it a very powerful fishery. So there's a lot of fish in the ocean in this part of the world. And it also has interesting effects on the climate on land. So in this region, you can see even on this map, there's this thin strip of desert. And then you get into the Andes Mountains.