Usually, tunnels are made either by human engineers or flowing water. But near the town of Novo Hamburgo, Brazil, there are tunnels large enough to drive a car in that were dug by neither - instead, scientists have a theory that these are the work of ancient, giant sloths. Jeff and Anthony discuss the theory, and suggest a few of their own. GET BONUS EPISODES, VIDEO HANGOUTS AND MORE. VISIT: http://patreon.com/wehaveconcerns Get all your sweet We Have Concerns merch by swinging by http://wehaveconcerns.com/shop Hey! If you’re enjoying the show, please take a moment to rate/review it on whatever service you use to listen. Here’s the iTunes link: http://bit.ly/wehaveconcerns And here’s the Stitcher link: http://bit.ly/stitcherwhconcerns Or, you can send us mail! Our address: We Have Concerns c/o WORLD CRIME LEAGUE 1920 Hillhurst Ave #425 Los Angeles, CA 90027-2706 Jeff on Twitter: http://twitter.com/jeffcannata Anthony on Twitter: http://twitter.com/acarboni Today’s story was sent in by Jason Black: http://www.rawstory.com/2017/08/massive-caves-in-southern-brazil-are-actually-ancient-ground-sloth-burrows/ If you’ve seen a story you think belongs on the show, send it to [email protected], post in on our Facebook Group https://www.facebook.com/groups/WeHaveConcerns/ or leave it on the subreddit:http://reddit.com/r/wehaveconcerns Support the show and get bonus episodes, videos, Discord community access and more! http://patreon.com/wehaveconcernsJeff on Blue Sky: https://bsky.app/profile/jeffcannata.bsky.socialAnthony on Blue Sky: https://bsky.app/profile/acarboni.bsky.social