[machogirl]

Here’s the link to the Sinkhole Bugle.
I wouldn’t want to be anywhere around that gas.

http://lasinkhole.wordpress.com/2012/11/22/3740/

[Errant]

I ran across this free 442 page PDF entitled, "Beyond Collapse" that y'all may be interested in.

Beyond Collapse

It's a little large, but once it loads you should be able to save it to your device as a .PDF file using the file menu at the top or your browser. I contains some interesting reading and some helpful info.