We have those webs in our hills here in SoCal. They are made by the Funnelweb Spider.
It is spider time for sure. I noticed a big one on the plant we have sitting on the front porch. Nothing to compare with yours though. And when I walked in the garage I had to fight a few of them too. Guess they are getting ready for the winter.
You're my kind of gal. I like to ponder too. A lot of intricate work went into this web.