this post was submitted on 15 Dec 2025
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Huge tunnels discovered that were not made by humans or geology (www.earth.com)
submitted 1 week ago by Delta_V@lemmy.world to c/science@lemmy.world
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...Many of the passages are longer than 600 yards (550 meters) and tall enough for an adult to walk through without bending.

The leading idea is that giant, extinct ground sloths dug these colossal shelters, turning parts of South America into a maze of underground homes...

...the tunnel walls are packed with claw marks, sometimes in three parallel grooves, right where a digging limb would bite into rock...

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[โ€“] BurgerBaron@piefed.social 12 points 1 week ago (1 children)

The photos in that old PDF they linked to are so cool, seeing all the claw marks.