I was wondering if this is a petrified human skull. I know that rocks can sometimes look like this but this one has the shape as well as a hole where the spine would be and also on the top where that soft spot is when you are a baby. I found this a few years ago out in the desert near California city and Ridgecrest.

Post's pictures

h6.JPG, 308.84 kb, 768 x 881

h7.JPG, 340.08 kb, 840 x 768

head 1.JPG, 339.69 kb, 768 x 989

I'm sorry, I can't see any way to interpret this rock as a skull -- human or otherwise.