If interested in seeing an earthquake fault area while in the San Francisco Bay area, then this is a good park to go to. We enjoyed walking/hiking through the park. It was a hot day so do bring water with you if you go on a similar type day.
Parking is in a free lot by the trail area.
Be aware - in summer poison oak is quite active in this area so be sure you know what it looks like if you are unfamiliar with it (we are - but we did see a fair amount of it in the area but its safe to hike if you know to stay away from it.)
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