4th of July Photo Shoot & Trivia Game (Ends July 4th)

Bonus question. for 10 points. IN YOUR OWN WORDS, explain how this type of pothole is formed. I will know if you copy/pasta. :p
In areas of flowing water, small stones get trapped in the current and slowly grind away at the softer stone, like limestone. They spin round and dig out perfect holes in the rock
 
This makes him immune to cyanide poisoning after a while building up a tolerance.
princess bride GIF
Excuse me, that was iocaine powder in the book and movie. Not a real poison by the way. +300 for @tripletfeb
 

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