I used to live in a condo building directly across the street from El Palo Alto. Walked by it every morning. Like the article says, it's in a small park right next to the Caltrain tracks, and you probably wouldn't take notice of it unless you already knew about it. I didn't know a lot of the history that this article provided, though... I love the thought of a >1k year old living thing just standing there inconspicuously.