Holyshit, this is cool.
I wonder what it was like to have your eyeballs vibrate while tripping on peyote. :aaa:
http://news.discovery.com/archaeology/acoustic-archaeology-chavin-mayan.html
That stuff is pretty cool, reminds me of what I read here:
http://en.wikipedia.org/wiki/Infrasound
particularly the "ghost in the Machine" thing