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    Rock City Park

    4.8 (8 reviews)

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    Ed U.

    I know it sounds like the name of either a quarry Fred Flintstone worked at or a retirement home for senior citizen rockers like Alice Cooper or at least most of The Partridge Family. But no, it's a congregation of natural rock formations shaped by wind erosion in Mt. Diablo State Park. I'm sure there's a fascinating geological history behind these massive boulders, but I'm not the one to copy-paste a Wikipedia entry to tell you that. It's not that far from the South Gate park entrance, but you still have to pay the $10 entrance fee unless you want to ride your bike or take the aptly named Summit Trail by foot. No, I'll pay the ten bucks since I was going up to the summit anyway (review: https://bit.ly/3MH3Zyr). There were a couple of parking lots which made the stop convenient. Next to the main one are picnic grounds if you want to make an outing of your visit. I just followed the trail marked appropriately as Trail Through Time. It wound around a section referred to as the wind caves as the rocks have undulating shapes full of nooks and crannies that apparently entertain children. There were no kids when I was there, so I amused myself by climbing through the crevasses myself. It did remind me a bit of Joshua Tree except it felt more crowded together (review: https://bit.ly/3g8sokg). I did make it to the outlook toward Sentinel Rock, but I didn't feel like scrambling down the boulders. Besides, there were three young dudes hanging out on top of Sentinel Rock, so I didn't want to intrude. Oh, who am I kidding? I was just worried my frail bones would snap like twigs and I'd have to respond heroically when the dudes yelled, "You OK, old man?" It was fulfilling and taxing enough navigating the trails which were overrun with manzanitas. Definitely stop here to get your ten bucks worth. RELATED - Up for a hike? Here's a collection of trails I've walked and reviewed: http://bit.ly/2OrC8nU

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    2 years ago

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    1 year ago

    Mother Nature at her best, trails, picnic areas with tables and the Wind Caves. Beautiful drive up Mt. Diablo.

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    Sycamore Valley Park - Cows greeting us

    Sycamore Valley Park

    4.4(46 reviews)
    3.5 mi

    Today is cloudy . We stoped by the Sycamore Valley Park and was impressed by how beautiful it is …read more It has nice landscaping with trails that lead to different area of the park. We did not go further in to the hiking area . Plenty of car parks . Public restrooms with supplies are near by the children playground . Lots of pickle tables and BBQ grilled . This is a great location for a birthday party or friends gathering. A little further down are the beautiful fountain and a heart shaped pond . Lovely plantations and trees are omit . A few chairs . Perfect spot for photo shoots for groups or for small family. It is going to have more sun the next few days . I could imagine how beautiful this park would be with sunshine and blue sky !

    What a lovely surprise. We came to the park for the best part was the trail behind it. There are a…read morenumber of black cows roaming the area and eating grass. A whole family of cows greeted us at the gate. There were cute baby cows too. After the cows finally left the gate entrance, we opened it and walked into the trail. It was pretty steep going uphill but once you got up the hill, the views were beautiful and reminded me of Dorset England. I just saw a documentary about Dorset and this looks just like it. Rolling green hills and valleys. With the blue skies, it was so peaceful. It's not a crowded place so we really enjoyed the peace of it. Lots of families with children hike here. It's such a safe place to get fresh air and exercise. We will definitely come back for another hike and lunch afterwards.

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    Sycamore Valley Park
    Sycamore Valley Park - Cows greeting us

    Cows greeting us

    Sycamore Valley Park - Bocce ball courts

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    Bocce ball courts

    Las Trampas Regional Wilderness - Trails on trails on trails

    Las Trampas Regional Wilderness

    4.5(150 reviews)
    6.4 mi

    HEMME CREEK TRAIL REVIEW: First time on this trail and it's easily one of my top 10 trails in the…read moreBay Area. You can park at the Ringtail Cat Staging Area, where there's about 8-10 parking spots. This trail is a loop that takes you literally through a stream. It's lush and woodsy, and there's a pretty steep elevation before you get a breather through a meadowy field of trees and grass. It wasn't crowded, so we took our time and enjoyed the Zen-ness of our hike. From the parking area, there's about a 1/4 mile path before you reach a metal gate where the loop begins. If you go right, you'll start with the Shred Wizard Creek part of the loop. If you go left, you'll start with the Ringtail Cat part of the loop. It's about 3 miles with a 720 foot elevation. There aren't many markers, so I recommend using AllTrails to keep you on track. We started with the creek, and it was so fun. The trail zig zags over the stream at least 25 times. There was one part of the trail where you had to walk in the stream, but it's so shallow we didn't get our socks wet at all. It can be a bit muddy. This was our favorite part of the hike. It's so green and lush. Once the creek part is done, there's a pretty steep climb to get to the Ringtail Cat part of the loop. This part is also very nice as you walk through grassy fields and trees. There's less shade here. There's still more hills and valleys along this part. Overall, this was so much fun, the scenery was beautiful, and you get quite a workout.

    Not a bad walk. I did the round-trip 3 miles. I will say once you do the switchbacks at the very…read morebeginning and see the hill, that's really the most of where you're going to see any of the wildlife. After that, it's really just looking at expensive houses. So if you're into walking through that neighborhood, then you can continue on, but if you're just looking to see some cool animals, you really don't need to go far. Unfortunately I did not see any of the other exotic animals besides the large goats. But driving on the highway I was able to see some zebra and a camel. So on your way over there be sure to look over at the hills for the wildlife.

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    Las Trampas Regional Wilderness
    Las Trampas Regional Wilderness
    Las Trampas Regional Wilderness

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    Mt Diablo Summit - Stairs to the observation deck

    Mt Diablo Summit

    4.3(89 reviews)
    2.0 mi

    This has been on my want to hike list for a long time and I finally got to do it on a perfect day…read more The weather was great, overcast and cool. We hiked it so fast and the views were spectacular. I can't wait to hike this in the spring with all the flowers in bloom. There are so many surrounding trails and I want to do them all! Lots of bathrooms throughout the trail. There is a visitor center at the top which you can drive to also. Please come and creat your own adventure.

    My God-father lives nearby, and he thought this would be a nice little distraction from the…read morebustling cities below. He was right. The drive up was intense. It's been a while since I drove roads similar to this, so it wasn't too bad, up. Hopefully down is OK too. There is a small entry fee (per car), but also a senior discount. So we only had time for the Summit. There are more Yelp! listings for other parts of the park. OK, so I was not prepared for the breathtaking views! It was a slightly hazy, or was it smoggy, day... But the views were still fantastic! If the views were not enough, there is a visitors' center in the light tower at the summit. Inside is lots of information, a Rangers' Station, and several informative and/or interactive displays. And there is camping in Mt Diablo too! To make things even more interesting, we took a different route down. I don't like backtracking, so this was a bonus... And i wasn't too bad.

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    Mt Diablo Summit - There's a stairway up to the museum. If you are looking for the restrooms, they are in the opposite direction across the parking lot.

    There's a stairway up to the museum. If you are looking for the restrooms, they are in the opposite direction across the parking lot.

    Mt Diablo Summit - My Godfather and Thuy

    My Godfather and Thuy

    Mt Diablo Summit

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    Diablo Foothills Regional Park - Trail

    Diablo Foothills Regional Park

    4.5(45 reviews)
    3.8 mi

    Perhaps unfairly, but as an outsider, I tend to view this part of Contra Costa County as, how do I…read moreput it diplomatically...snooty. There are tract homes that are really mansions in gated communities here. You get a pretty good indication when you take the Livorna Road exit off 680 and head toward the hills. There's a convenient parking lot at the staging area, and the walk begins along a tree-laden path that leads into the Shell Ridge Trail. This is where the open rolling hills provide some challenges to the calves. You eventually make it to the most picturesque portion of the hike on the Mokelumne Coast-to-Crest Trail. This is where the residential areas disappear and you're at one with nature...except for the occasional mountain biker. Small mouth was warranted during such disturbances, but they didn't prevent me from a scenic view of Mt. Diablo (photo: https://bit.ly/3hZ96M1). Now I could've gone deeper into Mt. Diablo State Park, but hey, I'm not a rugged mountaineer. Instead I made a turn and precariously made my way downward to the Alamo Trail. I didn't realize I exited the park until I saw distracted people on the path yelling into their mobile phones as they let their dogs do their business. Hey, where's your scooper, sister? I think with more thoughtful planning, you can probably avoid the ritzy people with their ritzy homes. Maybe not. RELATED - Exploring this part of Contra Costa County? Here's a collection of places I've visited and reviewed: https://bit.ly/2x1rlsD

    This review is for the trail starting at the livorna road staging area…read more I really liked this trail. It's a lot of up and down. The map on all trails leaves out a few mountain top options, so I went off trail a few times and followed an alternative route. This is definitely a trail that you will need your map in order to stay on. I hiked on a cloudy September day, temperature around 75 to 80°. On a hot day with direct sunlight this would be potentially unbearable.

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    Diablo Foothills Regional Park
    Diablo Foothills Regional Park
    Diablo Foothills Regional Park

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    Sequoians Clothes Free Club

    Sequoians Clothes Free Club

    4.7(30 reviews)
    8.3 mi

    Sequoians is an inclusive body-positive space for all ages, genders, and body types (including…read morepost-surgery or modified bodies)! It's an overall pretty chill space with a clubhouse, bocce ball, hiking, and pool/hot tub. It's member-only, and the community is tight-knit and welcoming. We have been members for the last year, and my girls (9,7,5) love going. They are treated with incredible love and respect by all the members and there are currently several families with kids, ranging from 5-14 years old. Yes, it's naked. Yes, you will see naked people. Yes, you will be naked! Kids under 18 do not have to be naked if they don't want to, but adults are expected to be clothes-free most of the time. Let me tell you why Sequoians is walking the walk on inclusivity, and why it isn't creepy. 1) Creepiness is gross and bad for all ages; sexualizing kids is wrong, full stop. 2) Creepiness is bad for business! Getting accused of improper activities is bad for business! Sequoians, and nudists in general, have a vested interest in keeping their spaces safe for everyone. 3) Inclusivity is more fun! More people can be included and feel safe, and that feels good. Therefore: Sequoians makes a big deal of vetting potential members, and everyone is educated about body positivity and etiquette. You see consent engagements in real life, in terms of playing with the kids, hanging out in shared spaces, keeping spaces clean, and working together for the benefit of everyone. Everytime we do out there, my kids say "ohhhhh we love it here!" and I do too. If you are interested in learning more, please read the website. And come visit!

    Great judgement free spot!…read more Every member I have met has been friendly, helpful and welcoming. The location is somewhat remote - and no cell service is a bonus. I really enjoy being in nature and hearing nothing but birds and wildlife. That said, it is a bit busier on the weekends, but not rowdy. Wonderful place to remove clothing and be in nature. If you're interested in gawking at naked members of the opposite sex, save your time and go to a strip club.

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    Sequoians Clothes Free Club - Relaxing with my pups at The Sequoians Clothes Free Club.

    Relaxing with my pups at The Sequoians Clothes Free Club.

    Sequoians Clothes Free Club - Beautiful private trails to enjoy nature naturally.

    Beautiful private trails to enjoy nature naturally.

    Sequoians Clothes Free Club

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    Red Willow Park

    Red Willow Park

    4.4(8 reviews)
    4.9 mi

    STAR JASMINE, MONARCH RIDGE LOOP TRAIL REVIEW: I found this short, easy trail on All Trails. There…read morewere no signs anywhere, so if it weren't for the navigation on the All Trails app, I wouldn't have known this existed. It's a 2.2 mile, easy walk/hike behind some homes and loops you back to Red Willow Park. The walk is fine, but there's nothing interesting to view, and you can hear the cars nearby so you don't get that out-in-nature feel. The park itself looks nice. There's a little playground with a slide and some swings. There were a few picnic tables with a bbq grill. Looks very clean, and there was no one around on a Saturday morning. We only passed by the park, so this rating is strictly for the trail.

    Red Willow Park is a sweet little park at the end of a cul de sac that could be easily missed!…read moreThere a few parking spots and the park is fully loaded with a playground, picnic benches, and bathrooms. I came here to participate in one of the San Ramon hiking challenges, unfortunately there aren't clearly marked signs for the trail, so you kinda just have to follow the trail. The SR hiking challenge has it as a 2.24 mile hike starting at red willow park and then descending with hidden crest loop. Apparently hidden crest loop was really hidden since I couldn't find it! Haha. There were different trails in different directions, but without clear markings and the higher grass like trees it didn't feel like a good idea. You can find the short trail and back right after passing the bathrooms. You start with a steep incline at first, but nothing too major. Once you get to the highest part of the incline, remember to turn around and take in that beautiful view! Along the way you'll see flowers and wildlife such as unique birds. Spring is the perfect time since everything is so green and in full bloom. A word of caution, stay in the middle of the path since getting too close to the outside with high trees, you may find some other wildlife! I did run into a couple of tiny garden snakes when I wasn't on the middle of the path, but they were harmless and merely trying to get away into the bushes. The mantra I kept repeating was that they are more afraid of you then you are of them! Regardless, stay on the path! Definitely a park that should be explored if you're ever in the area!

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    Red Willow Park - Most of the path was gravel

    Most of the path was gravel

    Red Willow Park
    Red Willow Park

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    Rock City Park - hiking - Updated May 2026

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