Speaking of Sinkholes
If you've been a mining stock investor over the last few years you'll know all about sinkholes.
Sinkholes occur naturally with a regular frequency. What makes this sinkhole a bit more interesting is that it is associated with the Texas Brine Company's solution mining operation in Bayou Corne in Louisiana. Check out the Wikipedia entry. If you really like sinkhole disasters, Lake Peigneur was a doozy!