><http://news.postbulletin.com/newsmanager/templates/localnews_story.asp?z=2&a=402>
The above URL is no longer valid; it is now
<http://www.postbulletin.com/newsmanager/templates/localnews_story.asp?z=2&a=402000>.
On that page there is also a link to another karst story:
<http://www.postbulletin.com/newsmanager/templates/localnews_story.asp?z=2&a=402015
>.
Mark Minton
