Free parking , clean bathroom and multiples trail connecting (you can even connect to Mt.Diablo state park ! Must visit and revisit
Castle Rock Regional Recreation Area
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Castle Rock Regional Recreation Area is a popular outdoor destination in Walnut Creek, CA, offering a variety of recreational activities for visitors of all ages.
With its scenic trails, picnic areas, and stunning views, Castle Rock provides a peaceful retreat for nature lovers and outdoor enthusiasts looking to explore the beauty of the East Bay.
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Reviews

Beautiful! Free parking! Dog friendly! Just gorgeous! Amazing rock formations! Also, poison oak. Be aware. Open spaces like this make me happy. All of the reviews are spot on. Whatever kind of...

This was a pleasant and comfortable hike through scenic surroundings, with beautiful views and grazing cows along the way. On our drive back, we also spotted deer and wild turkeys. I would have...

It was already well past 3PM, and I was debating with myself about whether it would be worthwhile to drive over here for the first time. I'm glad I won because I accidentally hit this place at its...

Finally caught a nice sunny Sunday to come back to Castle rock due to the raining weather lately. Many low areas become an road river so not good conditions for bikes.
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