Steven Dutch, Professor Emeritus, Natural and Applied Sciences, University of Wisconsin - Green Bay
Above: "You can't stick a knife blade between the stones." Yeah, sure, I thought. Travelers' Tales, Erich von Daniken stuff.
And it's all absolutely true.
Below: I had to search for a long time to find a nick where I could stick a knife blade for scale.
|The famous twelve-cornered stone|
Created 18 February 2000, Last Update 18 February 2000