From Jessica Erica Hahn, of HillBabies.com:
For some odd reason it seems Sign Hill is a place many Bay Area people have never explored. How often have you looked at those letters on the flank of a hill, reading SOUTH SAN FRANCISCO THE INDUSTRIAL CITY, as you zoom up 101 towards San Francisco?
If you’d like to explore this large and somewhat wild city park, which is also a rare grassland habitat with endangered animals, then join me on a kid-friendly hike later this month.
We’ll traverse two miles in about two hours. Bring what you like, but I recommend lunch, snacks, and water. A camera and binoculars would enhance your experience as the views are incredible, and there is wildlife here, always. We’ll take Ridge Trail to Letters Trail to Seubert, and end up on Ridge Trail. Most of the walk is mellow, though Seubert is uphill and with switchbacks.
I’m pleased to announce Loretta Brooks and Chuck Heimstadt, local activists and naturalists, will join us. They’re a treasure trove of information about the flora and fauna, and were instrumental in putting Sign Hill “on the map.” They’ll join as fellow hikers and casual conversationalists.

