Mount Umunhum Climber's Log

Viewing: 1-16 of 16

colingregory - Dec 13, 2019 11:45 am Date Climbed: Sep 23, 2017

Dayhike  Sucess!

First weekend it was open to the public!

Constant Ascension

Constant Ascension - May 22, 2019 11:18 pm Date Climbed: Dec 4, 2018

Up to the box  Sucess!

Hiked the 7 mile trail

Sarah Simon

Sarah Simon - Apr 21, 2019 12:46 pm Date Climbed: Apr 7, 2019

From the Bald Mountain trailhead  Sucess!

I had a Monday meeting in San Jose so decided to extend my business trip a bit at the front-end because April is a nice time of year to hike in the Bay Area. Heeding online warnings that the parking lot fills up fast on weekends, I hurried in my rental car to reach the parking lot by 7:30 AM - only to realize I was the only car there in a lot inhabited by only deer. Reminder: CA "early" is not CO EARLY. Anyhow...

Beautiful hike, had the entire trail to myself for the duration of the ascent and only encountered other humans at the very top (people who bicycled or motorycled to the top, at first). Empty enough up top that I was able to record a short promotional video for an event my company was hosting. Met a few other folks on the way down. Really enjoyed this hike. Contiued across the way to Bald Mountain afterward. Returned the rental car, then sampled wine and road electric scooters around downtown San Jose later on because ... well, just because.


bennovak - Feb 24, 2019 3:49 pm Date Climbed: Feb 24, 2019

Lazy Sunday drive  Sucess!

Now that it is open I thought I would give it a look.

trexkerry - Dec 31, 2017 8:19 pm Date Climbed: Sep 30, 2017

Trail from Bald Mtn Parking Lot

Great hike


LincolnB - Dec 29, 2017 6:32 pm Date Climbed: Dec 29, 2017

Nice drive  Sucess!

Recovering from knee surgery. Good time to bag a peak using my car


JHH60 - Nov 6, 2017 12:14 am Date Climbed: Nov 5, 2017

Nice hike  Sucess!

The new trail from the Bald Mountain parking area to the summit is one of the nicest trails in the Bay Area. It's well maintained, nicely shaded but with spectacular views.


calipidder - May 28, 2016 4:39 pm Date Climbed: May 28, 2016

Visit with the Umunhum Conservancy  Sucess!

Knowing that I'm leaving the area soon, my friend at the Umunhum Conservancy invited me along on a supporter's visit. So glad to legally get this summit, even though I drove to the top. The plans for the top look nice and there will be a 4.5 mile multi use trail to the summit from Bald Mountain parking for those don't think driving to the top is a true summit. :D


boyblue - Nov 15, 2015 4:58 pm Date Climbed: Nov 25, 2017

3x  Sucess!

This, my latest visit, was about 43 years- almost to the day- after my previous one in 1974. Nice brand new trail. Sure beats all that bushwhacking we did back in the day!

First time was in March, 1970 With my younger brother after a long hike from our house in Almaden Valley. Trip Report

Second time in November, 1974 with a couple of friends. We were briefly pursued by a military vehicle with a siren and we plunged down the north face on some steep scree to escape.

KD - Jun 24, 2015 11:05 pm Date Climbed: Jun 24, 2015

Final gate, and Wozniak yelled at me.

Made it all the way to the final gate, which was locked, under the monolith ( and decided to turn back. Up to that point there were no locked gates, and only a couple of "AREA CLOSED" signs, but when I got to the gate there were SEVERAL security cameras, lights, sensing equipment, and large, unmistakable NOT TRESPASSING signs that gave off a military/government vibe and made me feel very uncomfortable proceeding. So I took a few photographs of the amazing view, and turned back. It was a hot sunny day, with clear skies, and beautiful views. A great hike, except for the hillbilly I ran into that screamed his head off at me.

Halfway back down a white pickup truck suddenly appeared from the southern Mt. Umunhum Rd gravel road/trail ( The driver stepped on the gas, and pretended to run me over. I didn't panic, so he slid to a halt on the gravel next to me, and started yelling "What the FUCK are you doing here???" over and over again, spittle flying from his mouth. He looked like a bearded Wozniak, with a grey Santa beard (but in a bad way).

I told him "Leaving. Right now." (I was on my out anyway) but he stepped out of the pickup and continued his maniacal rant, interspersing a few "Can't you read the fucking signs???" inbetween. He pressed his face against mine and continued yelling. Eventually he must've gotten tired of it, and after telling him again that I am leaving, and won't be back, he stepped aside and let me continue walking down, following me with his pickup truck down along the road, probably to make sure I wouldn't turn around as soon as he was out of sight.

The rest of the walk back down to the parking lot was uneventful.

I'll come back when it opens to the public in a couple of years.


davidsanger - May 26, 2015 10:28 pm Date Climbed: May 26, 2015

with MidPen  Sucess!

Went up with a film crew and Midpeninsula Regional Open Space District staff. Summit trail from Bald Mountain parking lot is being built and is expected to open to the public in October 2016


huskertriguy - Jul 26, 2013 11:53 pm Date Climbed: Jun 13, 2010

Nothing Doing

Took the road all the way up to avoid the marijuana farms. We got busted by the very kind rent-a-cop just below the summit. Major bummer. At least he was as friendly as he was obstinate. We got no citation, just redirected back down the hill. It was a fun attempt nevertheless.


LincolnB - Aug 22, 2012 4:06 pm Date Climbed: Jun 1, 2008

Close but not yet

Tried twice to see how close I could legally climb to the peak – once in perhaps 2008 along the ridgeline from El Sombroso to Mt Thayer; there was a trail with freshly clipped vegetation on each side up to a geocache just before an “Area Closed” sign. Burd (below) once continued on from there and wrote “there was no way I could recommend the route to anyone”.
Back around 2002 my younger brother and I started from just above Guadalupe reservoir and climbed up Guadalupe Creek for 1,000 vertical feet or so, then cut right up the ridge until we were stopped by a headwall of poison oak. It made for a wonderful back-county climb, but we saw two abandoned marijuana farms on the way up – given the current arms escalation by the growers there’s no way I would take that route again.


sierramtngoat - Mar 13, 2012 4:20 am Date Climbed: Jul 31, 2010

NE Ridge  Sucess!

The NE Ridge has not been an illegal route for quite some time unless your plan is to go though the summit fence; these were the words of a ranger in the lower lot. I ran into the doppler radar property owner after summiting; he stated that it's not illegal to walk up the road passed the locked gate as long as you stay on the road or the marked trails. You have a much greater chance of having problems if you bush whack from the based due to illegal marijuana cultivation, or if you park off the road outside the main lot; the ATF might think you are a grower and search your car and bend you over. If anyone is interested in actual route info, PM me as I suspect that SP will squish a sneak peak description even though this is arguably not a sneak peak... it's actually a fun scramble with only a bit of bush.

Bob Burd

Bob Burd - Jan 19, 2012 5:04 pm Date Climbed: Dec 6, 2005

From El Sombroso  Sucess!

Some bushwhacking, a bit of trespassing, and eventually a visit to the concrete monolith. Trip Report


McCannster - Jan 19, 2012 4:34 pm

The Um Chronicles  Sucess!

This peak was a large part of my adolescence. Many stealth ascents over the years. Great place.

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