Sometimes it feels like every corner of our planet has been mapped, catalogued, portioned up, explained, and generally drained of any of its mystery. Which...
Your title is a bit misleading. It’s not one tunnel or an interconnected tunnel network. And most of the tunnels are pretty short. No more than 50 meters most of the time.
Your title is a bit misleading. It’s not one tunnel or an interconnected tunnel network. And most of the tunnels are pretty short. No more than 50 meters most of the time.
https://en.wikipedia.org/wiki/Erdstall
But what if, though? Maybe the mole men do exist.
Has anyone alerted the Fantastic Four?