Talk:Pictured Rocks National Lakeshore

Colours
Amusingly, Bing had a beautiful picture of the cliff faces with a hint to come to this article to find out where the colours of the rock face come from. And there is no description here. Could somebody with knowledge add it please. —Preceding unsigned comment added by 118.209.70.156 (talk) 14:01, 4 March 2010 (UTC)
 * See geology and history section Chris Light (talk) 15:41, 23 April 2010 (UTC)