Honestly it goes back 50000 years and can sometimes be specially prepared to go further. Everyone knows Uranium-Lead dating is where it's at. That shit goes back from 1 million to 4.5 [b]billion[/b] years. Lol git rekt
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Carbon dating doesn't disprove the existence of the ultra magical unicorn that created the universe in ten years with a magic candy cane either, what's your point?