Underground is definitely the best place to look for them.

On Mar 7, 2013, at 6:42 AM, Lyndon Tiu <l...@alumni.sfu.ca> wrote:

> 
> http://www.khou.com/news/texas-news/San-Antonio-kids-discover-underground-cave-195493451.html
> 
> -- 
> Lyndon Tiu

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