Yeah, the bubbles thing is kind of neat. What kind of chemical reaction is causing that, exactly? Anyone know?
The path was not overgrown yet.
I did enjoy the spring, but I bet its relative disuse for its proximity to the highway has something to do with its small size and its sulphuric smell.
I'd certainly consider it worth visiting if I'm driving that way on the 101 anyway, especially because you can get to it from your car so quickly.