Yep. You are witnessing the Guatemalan Drying Machine in action. We have the only clothesline I've ever seen in our region. At first, i assumed that they historically didn't have good rope, so they never got in the habit (culturally) of drying things that way. But I tried it once on a flat place, and it turns out that on a really sunny day it sometimes dries faster, I assume because the angle of the clothes is more normal to the sunlight, increasing insolation. The only drawback is that you have to find a hillside that isn't muddy, which can be quite a challenge in the rainy season.