system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] What exactly is the Lazarus Pit?
gpt
Well it restores youth an health with some side effects. Other than that nobody knows much about it, not even Vandal Savage.

It is known the pits occur naturally but as to why they work and what they're made of is completely unknown. There are a few hypotheses:

* Unique chemicals which are only found deep within the earth and/or created only in those conditions.

* A magical substance that occur naturally. Various magic charms, relics, and items can be created with normal objects under special conditions. It's possible the Lazarus Pits are created by chance/random when the thing are just right.

* An exotic cosmic substance that was pulled into the planet during the early stages of the Earth's formation. This would explain why it's only found deep within the Earth.

* It's actually artificial and the "naturally occurring" claim is just a ruse to prevent other people from making more. Ra's al Ghul is the earliest know user of the pits, so there's nothing that proves they existed before he did. Batman was also able to make a pit of his own but he never said how.