Henninger Flats

Mount Wilson, California 91023

Henninger Flats

Henninger Flats Professional Guide

Detailed Trail Description from our Guidebook

"This tough climb winds through a boulder-strewn creek bed and a narrow canyon before making a challenging ascent along a historic toll road. Your rewards for making the climb are stunning panoramic views of the L.A. basin, a peaceful, shaded campground with unique views of the city, and a charming visitor center at Henninger Flats. This is a great weekend getaway and perfect spot for a trail run.

Head north from the Eaton Canyon Nature Center, hiking through beautiful sage scrub in the rough boundaries of the Eaton Canyon Wash. This steep, narrow, switchbacking trail elevates you above the canyon walls, giving you your first glimpses of the urban basin around you."

More Henninger Flats Professional Guides

Detailed Trail Descriptions from Our Guidebooks

Los Angeles County: A Day Hiker's Guide (The Trailmaster)
John McKinney
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"Consider the conifers. A wind-bowed limber pine clinging to a rocky summit. A sweet-smelling grove of incense cedar. The deep shade and primeval gloom of a spruce forest. Where do trees come from? I know, I know. “Only God can make a tree.” Keep your Joyce Kilmer. Hold the metaphysical questions. Our inquiry here is limited to what happens in the aftermath of a fire or flood, when great numbers of trees lie dead or dying. Fortunately for California’s cone-bearing tree population—and tree lovers— there is a place where trees, more than 120,000 a year, are grown to replace those lost to the capriciousness of nature and the carelessness of humans. The place is Henninger Flats, home of the Los Angeles County Experimental Nursery. Perched halfway between Altadena and Mt. Wilson, Henninger Flats is the site of Southern California’s finest tree plantation. On the flats you’ll be able to view trees in all shapes and sizes, from seedlings to mature stands. It’s a small museum with reforestation exhibits." Read more
Afoot & Afield Los Angeles County (Wilderness Press)
Jerry Schad
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"Park-like Henninger Flats is a pleasant surprise to come upon after the sunny, often sweaty climb up the lower end of Mount Wilson Toll Road. The flats and slopes hereabouts have been the site of an experimental forest for more than 80 years now, with seedlings of pine, cypress, cedar, and other trees raised for reforestation projects. Run by the LA County Fire Department, the area encompasses four delightful camp and picnic areas, a visitor center, a pioneer museum, a short nature trail, and a seedling nursery. Backpackers register with the ranger on duty. Campfire permits and wood are usually available." Read more

Henninger Flats Reviews

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6/16/2018
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6/16/2018
This is part of the Eaton Canyon trail. I was here in June and the temperatures were pretty high. The views are great! It's a steady climb and there's no shade, so bring tons of water and sunblock.
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6/10/2012
Great exercise as the trail is steep and the views of the city below are impressive. Henninger flats is a welcome, beautiful and cool place to rest in the shade. There is even a nice little museum up there. that was a surprise. only downside is that the trail is more like a dirt road and its quite hot on the trail midday in the spring.
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12/31/2011
not the best day but still an excellent hike. hot day, crowded trail but invigorating hike with rewarding views.
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6/6/2010
I've only been hiking this section of the road for about six months, but every time I have, the trail has been moderately populated. Many dog walkers do not keep their dogs on leashes, so keep an eye out. The trail is somewhat steep, and it's a good idea to hike early in the morning or in the evening.
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Henninger Flats Photos

Trail Information

Mount Wilson
Nearby City
Dog-friendly
Accessibility
6.0
Distance
1,546 feet
Elevation Gain
Out-and-back
Trail Type
Difficult
Skill Level
6-7 hours
Duration
Year-round
Season
County of Los Angeles Fire Department Forestry Division
Local Contacts
USGS Mount Wilson
Local Maps

Activity Feed

Dec 2018