Explore the most popular cave trails in Black Diamond Mines Regional Park with hand-curated trail maps and driving directions as well as detailed reviews and photos from hikers, campers and nature lovers like you.

Loved everything about it

Beautiful view especially at the beginning couple of miles. Going up the rose hill for a panoramic view of the rolling hills.

Great trail to do especially in spring or winter... Too hot and dry in summer.

backpacking
1 month ago

Day one backpacking. Great place!

Great views!

Great views!

hiking
2 months ago

Pretty good hike. Lots of views. Antioch looks like a decent town from up there.

3 months ago

Always a good place to get out and stretch your legs

hiking
3 months ago

There is a kiosk at the entrance to the park which will collect $5/car to enter the park if the kiosk is staffed. When I went on a Saturday in January at 10:30 a.m. though, there was no one at the kiosk so we did not have to pay the entrance free. I would recommend that you expect to pay $5/car in case the kiosk is open when you come though.

Note: The trailhead is not the first parking lot that you see after the kiosk. Drive father down the road into the park to find the trailhead parking lot.

This trail will feel moderate for moderately experienced hikers and will feel difficult for inexperienced hikers or folks who are out of shape. This park reminds me of Briones Regional Park with rolling hills, city views, and lots of cows grazing in the park. Except I saw about twice as many cows here as I did in Briones Regional Park.

Definitely watch your feet for cow feces because it’s pretty much everywhere. I also couldn’t really find a good place to break for lunch midway through the hike, so settled for a scratchy patch of grass in semi-shade in between piles of cow feces.

There is a steep ascent on part of this trail that will freak out inexperienced hikers and make them rethink coming. If you bring a group of people with a mix of hiking experience, this is where you will see the most difference in people’s fitness levels and most likely people will not be able to hike at the same pace as at flatter parts of the trail.

This hike is ideal to do during cold and cloudy weather since there is full sun exposure pretty much the entire trail. Make sure you bring sunscreen, a hat and sunglasses even when going during winter. Also bring plenty of water since the sun will wear you out.

I’m glad I experienced this park, but don’t see myself coming back soon.

hiking
3 months ago

Great hike, very pretty, everything was very green. The kids thought they were dying (19,16,11,9) but had a great time.

4 months ago

I love this trail, and all the trails here at Black Diamond. awesome views, easily attained. my dog loves it too!

hiking
4 months ago

beautiful trails out there, kids liked all the different mines and sights. lower trails are fairly muddy after the rain, but once you get up the hill a bit it is rockier and less muddy.

Some steep parts but nothing to bad. Good trail for the pups and the cemetery is neat!

hiking
5 months ago

Incredible views of east contra costa county. Lots of coyotes, cows, hawks and wild turkeys along the route. Will definitely be back to do this again.

hiking
7 months ago

AWESOME Hike, Intense Up Hill That Last A Good While . Took My Dog, He Loved It . Be Aware If Wild Life, No Problem With The Squirrels But We Did Encounter A Rattle Snake

Enjoyed this hike! Definitely has a few areas where you can go where it can be more challenging or easier depending on what you are looking for. Awesome place for pups! Only negatory would be the very few shade spots.

backpacking
11 months ago

So much fun the family and I did 5.76 miles went all around the park so much to see and definitely will come back love this place

very good views on this trail and the rocky points are lovely....

Friday, May 19, 2017

It was really fun and historical! There's so much to do! It was a really clean park. There are numerous slopes but nothing to hard.

overall good but long day if you bring the kiddos. our little one, 8yrs had a couple break downs due to the heat but we ended up back at the car finishing 6.75 miles. Got a tad lost in the beginning, the trail wasn't clearly marked at the start. Nice views, would do again.

this was an ok hike..no scenery until you get to the other side of the mountain. over all good.

hiking
Tuesday, April 25, 2017

I'm really not a hiker I'm usually riding trails, but I'm gonna try hiking here...
I'll repost once I try it.

on Stewartville Trail

hiking
Tuesday, April 04, 2017

Beautiful hike! Not terribly difficult but a nice loop with gorgeous views of the bay and surrounding hills. Very dog friendly however, keep an eye out for the cows. My lab, who is generally indifferent to livestock, had to run for his life from one particularly aggressive heifer on trail. Good (funny) story but a little scary at the time.

Wednesday, March 01, 2017

beautiful views, and decent trails to walk on. one of my favorite spots in the area!

hiking
Wednesday, February 15, 2017

Black diamond is the only good thing about antioch

hiking
Wednesday, February 15, 2017

amazing place with spectacular views.

hiking
Monday, November 28, 2016

We hiked during Thanksgiving holiday weekend. The weather was perfect. After the rain all hills were green. The trails were damp but not muddy. The views were gorgeous. The hike was a mildly challenging and fun, it had two significant hills for a total ascent of 1800 feet along 7 miles. We hiked on the Chaparral Trail up to the Ridge Trail and then came down to the Stewartville Town site. We returned up the steep on the single track Miner's Trail that follows along a hill ridge back to the Ridge trail.

hiking
Monday, November 14, 2016

Good trail, did it with 10lb packs to give a couple people a "backpacking simulation". Good day!

hiking
Wednesday, October 26, 2016

The trail goes through 3 different old mining sites and the Rose Hill Cemetery. It as some pretty good hills and is on the upper side of moderate. I did it in late march so there were some wildflowers starting to bloom. Very good winter and spring hike and probably a 3 1/2 stars for me.

Wednesday, October 19, 2016

Beautiful golden grassy area, loves the scenery. Far away from everything!

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