There seemed to be a strange logo present many places down in the hatch. It was on the walls, on Desmond's jumpsuit, on the medicine cabinet and looked similar to the logo on desmonds running polo shirt. Any Ideas?

I posted a link in another thread, it looks like the I-ching.

http://www.rotten.com/library/occult/i-ching/iching3.jpg

Here is some cool info. about the I-Ching as well - scroll down to where it has the numbers and look up what "our" numbers mean....pretty cool.

http://en.wikipedia.org/wiki/I_Ching