The dark web isn't a cave, it's part of the internet. The user experience of using Tor browser is basically "slow Firefox with unpronounceable URLs". You could easily link something if you've seen it.

The fact that you can't copy/paste a URL here makes me think that you probably haven't seen this. It's more likely that you just heard a Reddit rumor about cannibals on the dark web and decided to repeat that rumor here without thinking through the reliability of your source.

But hey, you can prove me wrong with a simple link.