Rubber caverns, the further you go down towards the power source, the more latex and rubber there is in the air. Careful! If you're not wearing proper gear, you won't be able to escape the rubber trap in store for you! Frozen like a statue, the rubber continuously coats you more and more until you're unable to escape and give into just another addition to the cave's gallery!
Shout out to @spaceinflatable for the idea! I wanna implement this somewhere into a DnD game!!!