I like this area a lot for a short hike in the hills with the dog (yes, dogs are allowed on leash). It's got hills, open space, woods, water, parking, restrooms, and several trails. And it's easy to get to from the Peninsula without having to drive into the mountains. Only problems are it's so close to I-280 that you can sometimes see and often hear the traffic. Also, the parking lot fills up on nice afternoons, so have a backup in mind if you can't get in.
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