Sunlight filtering through the towering trunks of old-growth coast redwoods onto a wooden boardwalk in Muir Woods
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Muir Woods

"You lower your voice without meaning to — the trees seem to ask it of you."

I have never seen a group of people fall silent so fast. We stepped off the shuttle at Muir Woods on a bright Saturday, part of a chattering, sunburned crowd, and within a hundred meters of the trailhead the talking simply stopped. It was the trees that did it. Coast redwoods rise here like the columns of a cathedral built for a species larger than ours, and the light comes down through them already green, already softened, so that the whole valley feels submerged. Lia reached for my hand without a word. Somewhere above us a raven called and the sound seemed to travel a long way before it found anywhere to land. We had come expecting a pleasant walk. We got something closer to reverence.

Cathedral Grove

The main trail follows Redwood Creek on a wooden boardwalk deep into the valley, and the finest of the old-growth stands is Cathedral Grove — a name that could feel like marketing anywhere else and here feels merely accurate. The trees are more than two hundred feet tall and some are well over a thousand years old, their bark furrowed and cinnamon-red, their bases wide enough that Lia and I together couldn’t reach halfway around. A sign asks visitors to keep silence through the grove, and to my surprise everyone obeyed. We stood with our necks craned back until they ached, trying and failing to take in the full height of a single trunk, feeling the particular smallness that only very old, very large living things can impose. It is not a humbling that stings. It is a relief.

The towering red trunks of ancient coast redwoods in Cathedral Grove rising into green filtered light

The Creek and Its Salmon

Redwood Creek runs the length of the valley, clear and cold over gravel, and the redwoods depend on it as much as it seems to depend on them. In late autumn and winter, coho salmon and steelhead fight their way up from the ocean to spawn in these very shallows — the same fish that swam here before the city across the hills existed. We didn’t catch the run, but we lingered on the footbridges watching the water braid over stones, banana slugs the color of egg yolk inching along the damp trailside, sword ferns crowding the banks. A ranger told us the fog is the secret: the redwoods drink it directly through their needles on summer mornings when no rain falls, wringing moisture from the sea air. It explained the coolness, the drip, the deep green hush of everything.

Clear water of Redwood Creek braiding over gravel among ferns and mossy redwood roots

Climbing Out of the Valley

To escape the crowds we climbed. The Ben Johnson and Dipsea trails switchback up out of the redwood valley into a different world — drier, brighter, tangled with bay laurel and Douglas fir — and near the top the forest opens and you catch a sudden blue wedge of the Pacific through the trees. We ate our packed lunch on a fallen log with the whole of Mount Tamalpais rising behind us, the marine layer sitting out over the ocean like a second, lower sky. Coming back down into the shade of the big trees felt like descending into cool water. By late afternoon the day-trippers had thinned, the light had gone long and amber, and for a stretch of trail we had a thousand-year-old grove entirely to ourselves.

A view of the blue Pacific glimpsed through the trees from the higher trails above the redwood valley

Getting There

Muir Woods National Monument sits about forty-five minutes north of San Francisco, across the Golden Gate in Marin County. Parking and the shuttle both require advance reservations — book them online before you go, as there is no walk-up parking and the small lot fills fast. Arrive early or late in the day to dodge the midday crowds and catch the best light through the canopy. Bring a warm layer even in summer, since the valley stays cool and often foggy. Pair it with a drive over Mount Tamalpais or down to Muir Beach to make a full day of the Marin coast.