@mistaben
LOL "fuzzy fertilizer bank?" That should be this city, which has a name that (I guess) isn't very nice in Spanish: https://goo.gl/maps/jVp8ud2ZHn42

@Xiled1 You're talking about the canyon on the border between Santa Catarina and Rio Grande do Sul? I have a friend from Porto Alegre who once told me about a canyon up on that border he and his brother like to hike in. It might be that one. I didn't know the name until just now, but I looked it up...

I didn't know about this project until the other day, but I'll be on the trail with a handful of Boy Scouts tomorrow morning. I'll make sure to say hi to anyone we see scrubbing rocks!