Save Mount Diablo
@savemountdiablo.bsky.social
Preserve, Defend, Restore, Educate, Enjoy.
Since 1971, we and our partners have protected over 120,000 acres on and around Mount Diablo.
savemountdiablo.org
Since 1971, we and our partners have protected over 120,000 acres on and around Mount Diablo.
savemountdiablo.org
Caught on camera 📸
This great blue heron stopped by one of our properties for a drink.
The great blue heron has a range that stretches from as far north as Alaska all the way down to Venezuela. They can be found mostly along shorelines and marshlands.
source: allaboutbirds.org
This great blue heron stopped by one of our properties for a drink.
The great blue heron has a range that stretches from as far north as Alaska all the way down to Venezuela. They can be found mostly along shorelines and marshlands.
source: allaboutbirds.org
November 12, 2025 at 5:04 PM
Caught on camera 📸
This great blue heron stopped by one of our properties for a drink.
The great blue heron has a range that stretches from as far north as Alaska all the way down to Venezuela. They can be found mostly along shorelines and marshlands.
source: allaboutbirds.org
This great blue heron stopped by one of our properties for a drink.
The great blue heron has a range that stretches from as far north as Alaska all the way down to Venezuela. They can be found mostly along shorelines and marshlands.
source: allaboutbirds.org
This Friday and Saturday, you have the opportunity to spend a day, or two, outside giving back to the mountain we all love.
Join our Pine Canyon Cleanup! savemountdiablo.volunteerhub.com/vv2/lp/smddirt/
📸: 2024 Pine Canyon Cleanup, chipping along the Knobcone Point Trail | Mary Nagle
Join our Pine Canyon Cleanup! savemountdiablo.volunteerhub.com/vv2/lp/smddirt/
📸: 2024 Pine Canyon Cleanup, chipping along the Knobcone Point Trail | Mary Nagle
November 11, 2025 at 5:04 PM
This Friday and Saturday, you have the opportunity to spend a day, or two, outside giving back to the mountain we all love.
Join our Pine Canyon Cleanup! savemountdiablo.volunteerhub.com/vv2/lp/smddirt/
📸: 2024 Pine Canyon Cleanup, chipping along the Knobcone Point Trail | Mary Nagle
Join our Pine Canyon Cleanup! savemountdiablo.volunteerhub.com/vv2/lp/smddirt/
📸: 2024 Pine Canyon Cleanup, chipping along the Knobcone Point Trail | Mary Nagle
Tomorrow night, we will honor Veterans Day by lighting the Beacon atop Mount Diablo's summit. The Beacon will shine down on the Diablo region until it is rested at sunrise.
savemountdiablo.org/experience/e...
📸: Stephen Joseph
savemountdiablo.org/experience/e...
📸: Stephen Joseph
November 10, 2025 at 5:05 PM
Tomorrow night, we will honor Veterans Day by lighting the Beacon atop Mount Diablo's summit. The Beacon will shine down on the Diablo region until it is rested at sunrise.
savemountdiablo.org/experience/e...
📸: Stephen Joseph
savemountdiablo.org/experience/e...
📸: Stephen Joseph
With steep ridges and a vast network of trails, Las Trampas Regional Wilderness Preserve offers visitors a true sense of wilderness despite its proximity to the bustling Highway 680 corridor.
savemountdiablo.org/blog/las-tra...
📸: Karen Bakar
savemountdiablo.org/blog/las-tra...
📸: Karen Bakar
November 7, 2025 at 5:05 PM
With steep ridges and a vast network of trails, Las Trampas Regional Wilderness Preserve offers visitors a true sense of wilderness despite its proximity to the bustling Highway 680 corridor.
savemountdiablo.org/blog/las-tra...
📸: Karen Bakar
savemountdiablo.org/blog/las-tra...
📸: Karen Bakar
For millennia, the Altamont Pass has been a critical thoroughfare for both wildlife and people. It is the single most important corridor connecting #MountDiablo to the rest of the #DiabloRange.
Today, protecting Altamont is one of our top acquisition goals.
Today, protecting Altamont is one of our top acquisition goals.
Rewilding the Altamont
By Steven dePaschalis and Seth Adams In the rolling eastern hills of Alameda County, California, Altamont Pass is a natural divide between two worlds: the fertile, urbanized Livermore Valley to…
savemountdiablo.org
November 6, 2025 at 5:03 PM
For millennia, the Altamont Pass has been a critical thoroughfare for both wildlife and people. It is the single most important corridor connecting #MountDiablo to the rest of the #DiabloRange.
Today, protecting Altamont is one of our top acquisition goals.
Today, protecting Altamont is one of our top acquisition goals.
Meet the lesser goldfinch (Spinus psaltria)!
This yellow-bellied songbird can be found in a variety of habitats including open brushy country, open woods, streamside areas, and gardens.
Its habitat stretches from Washington State all the way to the Peruvian Andes.
📸: Laura Kindsvater
This yellow-bellied songbird can be found in a variety of habitats including open brushy country, open woods, streamside areas, and gardens.
Its habitat stretches from Washington State all the way to the Peruvian Andes.
📸: Laura Kindsvater
November 5, 2025 at 5:03 PM
Meet the lesser goldfinch (Spinus psaltria)!
This yellow-bellied songbird can be found in a variety of habitats including open brushy country, open woods, streamside areas, and gardens.
Its habitat stretches from Washington State all the way to the Peruvian Andes.
📸: Laura Kindsvater
This yellow-bellied songbird can be found in a variety of habitats including open brushy country, open woods, streamside areas, and gardens.
Its habitat stretches from Washington State all the way to the Peruvian Andes.
📸: Laura Kindsvater
Join us on the mountain for our annual Pine Canyon Cleanup!
📆: November 14-15
We'll be hosting volunteer events in collaboration with Mount Diablo State Park and the East Bay Regional Park District.
savemountdiablo.volunteerhub.com/vv2/lp/smddi...
📆: November 14-15
We'll be hosting volunteer events in collaboration with Mount Diablo State Park and the East Bay Regional Park District.
savemountdiablo.volunteerhub.com/vv2/lp/smddi...
November 4, 2025 at 5:05 PM
Join us on the mountain for our annual Pine Canyon Cleanup!
📆: November 14-15
We'll be hosting volunteer events in collaboration with Mount Diablo State Park and the East Bay Regional Park District.
savemountdiablo.volunteerhub.com/vv2/lp/smddi...
📆: November 14-15
We'll be hosting volunteer events in collaboration with Mount Diablo State Park and the East Bay Regional Park District.
savemountdiablo.volunteerhub.com/vv2/lp/smddi...
Exciting news about a bill we've worked on to help improve California State Parks’ land acquisition process: It passed!
This new law will take effect in January, and will make it much easier for #California State Parks to acquire more land!
This new law will take effect in January, and will make it much easier for #California State Parks to acquire more land!
Helping Advance California State Parks’ Land Acquisition Efforts
Recently, Save Mount Diablo has made great progress helping our good partner California State Parks advance its land acquisition efforts. Consider the following examples from this year. On October…
savemountdiablo.org
November 3, 2025 at 5:05 PM
Exciting news about a bill we've worked on to help improve California State Parks’ land acquisition process: It passed!
This new law will take effect in January, and will make it much easier for #California State Parks to acquire more land!
This new law will take effect in January, and will make it much easier for #California State Parks to acquire more land!
When we acquire land, it is often far from untouched. In recent years, we’ve carted away tens of thousands of pounds of material, such as scrap metal and tires, clearing obstructions that have, in some cases, impacted Mount Diablo’s wildlife for decades.
savemountdiablo.org/blog/restori...
savemountdiablo.org/blog/restori...
October 31, 2025 at 4:07 PM
When we acquire land, it is often far from untouched. In recent years, we’ve carted away tens of thousands of pounds of material, such as scrap metal and tires, clearing obstructions that have, in some cases, impacted Mount Diablo’s wildlife for decades.
savemountdiablo.org/blog/restori...
savemountdiablo.org/blog/restori...
From stargazing to tarantula hikes and the world’s first Trashure Hunt, get a closer look our #stewardship team's latest fall adventures: savemountdiablo.org/blog/stargaz...
Stargazing, Tarantulas, and the World's First Trashure Hunt!
Stewardship Update Written by Haley Sutton, Land Stewardship Associate and Kendra Smith, Education & Outreach Coordinator Fall Festivities in Stewardship Our watering crew continued to meet up at…
savemountdiablo.org
October 30, 2025 at 4:03 PM
From stargazing to tarantula hikes and the world’s first Trashure Hunt, get a closer look our #stewardship team's latest fall adventures: savemountdiablo.org/blog/stargaz...
The endangered caper-fruited tropidocarpum has been discovered in Vasco Hills Regional Preserve on protected land acquired by the East Bay Regional Park District in partnership with the East Contra Costa County Habitat Conservancy. This rare plant hadn't been seen for 68 years!
Rare Plant Discovered at Vasco Hills Regional Preserve After 68 Years
A new population of the caper-fruited tropidocarpum has been discovered in Vasco Hills Regional Preserve on protected land acquired by the East Bay Regional Park District in partnership with the East…
www.ebparks.org
October 29, 2025 at 4:06 PM
The endangered caper-fruited tropidocarpum has been discovered in Vasco Hills Regional Preserve on protected land acquired by the East Bay Regional Park District in partnership with the East Contra Costa County Habitat Conservancy. This rare plant hadn't been seen for 68 years!
Vámanos en una caminata fácil para buscar aves en la Bay Point Regional Shoreline. Juan Pablo Galván, observador de aves y naturalista, liderará junto con Roxana Lucero, naturalista y residente de Bay Point, tanto en inglés como en español.
www.eventbrite.com/e/las-aves-d...
📸: Laura Kindsvater
www.eventbrite.com/e/las-aves-d...
📸: Laura Kindsvater
October 27, 2025 at 4:05 PM
Vámanos en una caminata fácil para buscar aves en la Bay Point Regional Shoreline. Juan Pablo Galván, observador de aves y naturalista, liderará junto con Roxana Lucero, naturalista y residente de Bay Point, tanto en inglés como en español.
www.eventbrite.com/e/las-aves-d...
📸: Laura Kindsvater
www.eventbrite.com/e/las-aves-d...
📸: Laura Kindsvater
Today is the #InternationalDayofClimateAction! Here are six things that Save Mount Diablo is doing RIGHT NOW to take action on climate.
Want to know how you can help? We'll post some links in the thread. 👇
Want to know how you can help? We'll post some links in the thread. 👇
October 24, 2025 at 4:50 PM
Today is the #InternationalDayofClimateAction! Here are six things that Save Mount Diablo is doing RIGHT NOW to take action on climate.
Want to know how you can help? We'll post some links in the thread. 👇
Want to know how you can help? We'll post some links in the thread. 👇
The City of Dublin and developers have filed an objection to our legal victory over Dublin Measure II.
We are very confident the judge’s decision will not change, that our victory will be upheld. We’ll keep you updated.
Read the full press release here.
We are very confident the judge’s decision will not change, that our victory will be upheld. We’ll keep you updated.
Read the full press release here.
Dublin Files Weak Objection to Our Legal Victory!
Dublin and Land Speculator/Developer Crosby Attempt to Relitigate Case DUBLIN, CA—The City of Dublin and developers have filed an objection to our legal victory over Dublin Measure II. We’ll respond…
savemountdiablo.org
October 23, 2025 at 4:03 PM
The City of Dublin and developers have filed an objection to our legal victory over Dublin Measure II.
We are very confident the judge’s decision will not change, that our victory will be upheld. We’ll keep you updated.
Read the full press release here.
We are very confident the judge’s decision will not change, that our victory will be upheld. We’ll keep you updated.
Read the full press release here.
This Saturday, October 25th, at 9 AM, tune into the Ventana Wildlife Society live stream to watch seven condors get released into the wild!
www.eleoonline.net/Pages/WebFor...
www.ventanaws.org/condor_cam.html
📸: California condor at Pinnacles National Park | @heinphoto.bsky.social
www.eleoonline.net/Pages/WebFor...
www.ventanaws.org/condor_cam.html
📸: California condor at Pinnacles National Park | @heinphoto.bsky.social
October 22, 2025 at 4:05 PM
This Saturday, October 25th, at 9 AM, tune into the Ventana Wildlife Society live stream to watch seven condors get released into the wild!
www.eleoonline.net/Pages/WebFor...
www.ventanaws.org/condor_cam.html
📸: California condor at Pinnacles National Park | @heinphoto.bsky.social
www.eleoonline.net/Pages/WebFor...
www.ventanaws.org/condor_cam.html
📸: California condor at Pinnacles National Park | @heinphoto.bsky.social
Thank you Assemblymember Nick Schultz for authoring AB 1319, and thank you @gavinnewsom.bsky.social for signing it into law!
Now, our state's most at-risk species have a chance even if Trump weakens endangered species protections!
📸: Chris Lyall
Now, our state's most at-risk species have a chance even if Trump weakens endangered species protections!
📸: Chris Lyall
October 21, 2025 at 4:03 PM
Thank you Assemblymember Nick Schultz for authoring AB 1319, and thank you @gavinnewsom.bsky.social for signing it into law!
Now, our state's most at-risk species have a chance even if Trump weakens endangered species protections!
📸: Chris Lyall
Now, our state's most at-risk species have a chance even if Trump weakens endangered species protections!
📸: Chris Lyall
Explore the awe-inspiring Del Puerto Canyon on this short hike; you might catch a glimpse of rare wildflowers, birds, or other wildlife! The canyon's biodiversity is in the top five for the Diablo Range.
➡ savemountdiablo.org/blog/del-puerto-canyon-a-short-hike-via-frank-raines-regional-park/
➡ savemountdiablo.org/blog/del-puerto-canyon-a-short-hike-via-frank-raines-regional-park/
Del Puerto Canyon: A Short Hike via Frank Raines Regional Park
Explore the awe-inspiring Del Puerto Canyon and you might see some unusual wildflowers, birds, or other wildlife! Distance: Two miles Elevation gain: 711 feet Difficulty: Moderate Travel time: One…
savemountdiablo.org
October 20, 2025 at 4:19 PM
Explore the awe-inspiring Del Puerto Canyon on this short hike; you might catch a glimpse of rare wildflowers, birds, or other wildlife! The canyon's biodiversity is in the top five for the Diablo Range.
➡ savemountdiablo.org/blog/del-puerto-canyon-a-short-hike-via-frank-raines-regional-park/
➡ savemountdiablo.org/blog/del-puerto-canyon-a-short-hike-via-frank-raines-regional-park/
Pollinators are in danger—but the California sunflower is stepping up as a superhero.
It supports 60 native bee species and attracts birds. Small plant, big impact.
#Pollinators #NativePlants
It supports 60 native bee species and attracts birds. Small plant, big impact.
#Pollinators #NativePlants
October 17, 2025 at 4:06 PM
Pollinators are in danger—but the California sunflower is stepping up as a superhero.
It supports 60 native bee species and attracts birds. Small plant, big impact.
#Pollinators #NativePlants
It supports 60 native bee species and attracts birds. Small plant, big impact.
#Pollinators #NativePlants
Our Marsh Creek 7 property has been becoming a haven for pollinators and other wildlife over the past three years! This summer and fall, our team is actively watering more than 700 plants on our Marsh Creek 7 property.
savemountdiablo.org/blog/restori...
📸: Haley Sutton and Mary Nagle
savemountdiablo.org/blog/restori...
📸: Haley Sutton and Mary Nagle
October 16, 2025 at 4:06 PM
Our Marsh Creek 7 property has been becoming a haven for pollinators and other wildlife over the past three years! This summer and fall, our team is actively watering more than 700 plants on our Marsh Creek 7 property.
savemountdiablo.org/blog/restori...
📸: Haley Sutton and Mary Nagle
savemountdiablo.org/blog/restori...
📸: Haley Sutton and Mary Nagle
Good news: Several California wildlife crossings are already a success! Wildlife crossings are being built all over the world. The largest one on the planet, the Wallis Annenberg wildlife crossing, will be finished in the fall of 2026 near LA.
#wildlifecrossings save lives. We need more of them!
#wildlifecrossings save lives. We need more of them!
October 15, 2025 at 4:09 PM
Good news: Several California wildlife crossings are already a success! Wildlife crossings are being built all over the world. The largest one on the planet, the Wallis Annenberg wildlife crossing, will be finished in the fall of 2026 near LA.
#wildlifecrossings save lives. We need more of them!
#wildlifecrossings save lives. We need more of them!
Celebrate climate solutions at the Bay Area Cool Down, a half-day climate literacy festival on October 25th, at The Starry Plough in Berkeley! 🌎
www.eventbrite.com/e/the-bay-ar...
www.eventbrite.com/e/the-bay-ar...
October 14, 2025 at 4:04 PM
Celebrate climate solutions at the Bay Area Cool Down, a half-day climate literacy festival on October 25th, at The Starry Plough in Berkeley! 🌎
www.eventbrite.com/e/the-bay-ar...
www.eventbrite.com/e/the-bay-ar...
We recently won a year-long lawsuit against the City of Dublin! The lawsuit opposed the city's decision to put Measure II on the ballot without environmental review. Measure II would've allowed for commercial development, like warehouses, destroying the greenbelt between Dublin and Livermore.
Victory in Dublin! We Won Big on All Counts!
Judge Blocks City of Dublin Measure II from Breaking the Dublin Urban Limit Line and Violating the Greenbelt between Dublin and Livermore The Successful Legal Challenge Was Filed by Save…
savemountdiablo.org
October 13, 2025 at 4:43 PM
We recently won a year-long lawsuit against the City of Dublin! The lawsuit opposed the city's decision to put Measure II on the ballot without environmental review. Measure II would've allowed for commercial development, like warehouses, destroying the greenbelt between Dublin and Livermore.
Thank you to the wonderful group who joined us for our fall Discover Diablo #hike at Borges Ranch! Together, we explored the wonders of Walnut Creek's open space on this three-mile hike.
Sign up for our upcoming #DiscoverDiablo hikes: savemountdiablo.org/discoverdiablo
📸: Karen Bakar
Sign up for our upcoming #DiscoverDiablo hikes: savemountdiablo.org/discoverdiablo
📸: Karen Bakar
October 10, 2025 at 4:04 PM
Thank you to the wonderful group who joined us for our fall Discover Diablo #hike at Borges Ranch! Together, we explored the wonders of Walnut Creek's open space on this three-mile hike.
Sign up for our upcoming #DiscoverDiablo hikes: savemountdiablo.org/discoverdiablo
📸: Karen Bakar
Sign up for our upcoming #DiscoverDiablo hikes: savemountdiablo.org/discoverdiablo
📸: Karen Bakar
Our latest group of Young Diablo Explorers enjoying the autumn leaves at Mangini Ranch Educational Preserve as they learn about Mount Diablo's plants and animals.
The curricula we developed for this program is available on our website.
bit.ly/3to5explorers
📸: Emily Sherwood
The curricula we developed for this program is available on our website.
bit.ly/3to5explorers
📸: Emily Sherwood
October 9, 2025 at 4:04 PM
Our latest group of Young Diablo Explorers enjoying the autumn leaves at Mangini Ranch Educational Preserve as they learn about Mount Diablo's plants and animals.
The curricula we developed for this program is available on our website.
bit.ly/3to5explorers
📸: Emily Sherwood
The curricula we developed for this program is available on our website.
bit.ly/3to5explorers
📸: Emily Sherwood
Reposted by Save Mount Diablo
That's us! 👋 We are the Palo Alto environmental group.
Palo Alto environmental group buys three farms for $7.8 million trib.al/dsG3QCU
Palo Alto environmental group buys three farms for $7.8 million
Properties along Santa Clara-San Benito County line total 668 acres, are latest in a new trend
trib.al
October 8, 2025 at 8:35 PM
That's us! 👋 We are the Palo Alto environmental group.