ohjoy!: Over the years, I realized that this cache doesn't truly teach anything about geology. It has also become obvious that some cachers don't read the cache page, some don't actually park and walk to the stated coordinates, some snap their photos out of car windows, and some photoshop themselves into their picture.
Rather than continue encouraging this type of behavior, I feel it best to simply archive this earthcache and stop feeling any possible frustration on my part.
It's still a beautiful location which most will probably enjoy as they drive across the bridge.