Hiking to the Big Box in the Sky (Mount Umunhum)
Trail conditions were great…nice and wide. About 70% of trail shade covered. Gradual grade. Covered it in 2 hours and…
Read More »Mount Umunhum — Hike Logs
All logged hikes for Mount Umunhum (San Francisco Bay Area).
Mount Umunhum
Weather was great, there was low clouds hanging over the valley which were visible during breaks in the trees. Trail…
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Umunhum at last!
I have wanted to visit MT Umunhum for almost 20 years. The trail and all aspects of the open space…
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January on Mt. Umunhum
Bay Area Hikers to take on a challenging 16.75 mile hike and bag Mt. Umunhum on Saturday the 24th for…
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Mt. Umunhum
Yesterday was the first day in 2026 that the San Francisco Bay Area didn’t get any rain. And that was…
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Still not sure how to say Mount Umunhum
A very easy summit to climb. Nice scenery as you go up and it is a bit of a workout.…
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Umm Have you been to Mount Umunhum?
Great way to start out the New Year. Well maintnaed trail and lots of folks out hiking. Great views from…
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Mt. Umunhum
Trail well maintained. Was not that muddy from the rain. Very green. I got there at 10 am and the…
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Climbing Mount Umunhum
The goal for this hike is to reach the tall, square structure at the top that is left over from…
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Mt. Umunhum (the real slim shady?)
An awesome hike to start off the Bay Area Six-Pack of Peaks Challenge! The views were amazing, and looked even…
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Mount Umunhum: Hard to Spell, Easy to Climb !
This classic trail is always a fun hike with such vibrant green hills across the great Sierra Azul Open Space…
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