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Old 07-12-2011, 10:37 AM   #304
bwalsh
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Joined: Jan 2009
Location: Hell town
Oddometer: 10,712
Don't know if this has been answered yet.

[QUOTE+soph9]If anyone knows what causes this colouration please feel free to comment.[/QUOTE]

Acid mine drainage...

http://en.wikipedia.org/wiki/Acid_mine_drainage

Just noticed your RR. Have a great trip ladies! I'll be following along. One of these years I want to ride to Alaska.
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