The Internet is rife with “Google Translate” failures, but this is the first we’ve seen on Google Maps. Apparently the Rio De Janeiro = Landfill is a known issue within Google and it is caused by a mixup between a landfill site near Rio and a poor Portuguese to English translation, where the Portuguese is okay but the English is um, suspect.
I’ve never seen this on “Maps” before and apparently it only affects Rio De Janeiro, Brazil. Sao Paulo and other Brazilian cities are from what we see immune. It is unclear whether Google is working on a fix.