I rode by Shasta Dam on my Harley yesterday (in fact, I do most nice days since it's a very nice ride and only a few miles from home).
If I had seen those folks there, I would have pointed them out to security
Hmmm. AaronM or Donny causing the commotion? Might have really been Belinda
As a side note, you can get a permit allowing you to drive over to the awesome 4x4 trails on the other side.