the communal subconscious
Even that is an amazing concept and tends to push a person towards a belief in the supernatural.
I believe in a higher mind, operating at least at a local level. When I pass from town to town I see this in operation. An area does have a spirit, or invisible dimension of thought and feeling that I tap in to, which helps me to determine my place within the landscape.
This is partially forged by the architecture and partially by the energy of others moving through the area.
Personally, I still believe in a higher intelligence, beyond our own, call it what you will
I have also attempted to find research on the earliest origins of the god idea, the worship urge, and religion.... and did you find any decent books?