I have, from a different angle. I've also wondered but never known if they're vestiges of the original Busch Gardens. They're off the main path where you can't easily see them. Watch for side trips.
I do know that's poison oak on the right.
Will you have some time off over the next few days? It looks like we're going to have perfect hiking weather.
Let me know if this picture's too big on your screen. I'm tired of the teeny ones. I like big. But I need some easy watermarking software.