You examine the blood, it has a skull and crossbones in it (WTF?) you climb thru the hole and end up outside, but everything is so dull, gray, polluted, and foggy.
WHAT DO NOW?
A. Go back in and read note then go back out
B. Adventure on to (find home, that metal factory there, or the nuclear plant)
C. A. and B.
P.S. Sorry for no pics I am tired.