# Rock, stone

**URL:** <https://boards.straightdope.com/t/rock-stone/979017>\
**Category:** Miscellaneous and Personal Stuff I Must Share\
**Created:** [January 30, 2023, 3:52am UTC](https://boards.straightdope.com/t/rock-stone/979017 "2023-01-30T03:52:08Z")\
**Posts on this page:** 1\
**Page:** 5

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**Author:** ![pjd](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/pjd/32/3009_2.png) [@pjd](https://boards.straightdope.com/u/pjd)\
**Post date:** [February 12, 2023, 9:55pm UTC](https://boards.straightdope.com/t/rock-stone/979017/81 "2023-02-12T21:55:20Z")

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All is explained in [this documentary.](https://youtu.be/MUM89s4N2BQ?t=297)

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