We are meeting at the Sibley Volcanic Regional Preserve "OLD TUNNEL ROAD" staging area. Take 24 to Fish Ranch Road. Exit GO LEFT on FISH RANCH OVER HIGHWAY 24 to the EAST SIDE. HAIRPIN TURN TO OLD TUNNEL ROAD. The staging are will hold 8 - 10 cars...there is another smaller staging area up the road, to the right.
We are taking the Bay Area Ridge Trail along Round Top Creek to the Sibley Staging Area where it intersects with the Overlook trail. We will follow this trail past the Water Tank to the Round Top Trail, then veer to the left to Quarry Trail and back along the Quarry Trail fire road back to our cars. There will be lots of poison oak along the trail (bring some Tecnu or alcohol wipes), bring hiking poles, wear hiking boots, bring plenty of water and snacks. We will try to find the Labyrinths at the old quarry....Not sure about the mileage...but be prepared to hike for at least 3 hours.
Here is the link to the map: