Follow the same path as the youth who once fled the city. From San Francisco, cross the Golden Gate and head north through the rolling hills of Marin, and then Sonoma County. Keep going. In the summertime, the landscape is a sun-scorched ocher. After the rains have begun, it is an Irish shade of green. Continue through the vineyards to Mendocino. Hours will pass. The grassy hills give way to ragged mountains, and the trees grow pointy and thick. On foggy days, the treetops catch the mist that billows in off the Pacific, and clumps of it hang there like fallen clouds.

Past the South Fork of the Eel River the road winds through a patch of ancient redwood forest called Richardson Grove State Park. These trees, the coast redwoods, are the tallest living things on earth. They come from another time; their ancestors provided shade for dinosaurs. California’s redwood forest once stretched from the Oregon border south to Big Sur. Then, in the 1850s, men who came west seeking adventure and riches discovered the beauty and durability of the wood. They called it red gold. Trees were leveled. Fortunes were made. Today, only 4 percent of California’s old-growth redwood forest remains, like a magnificent cathedral that has been knocked to the ground, with only its gilded altar left standing.

In Richardson Grove, the redwoods loom mere inches from the roadway, and the trunks of the larger ones may be wider than your car. The oldest tree in the grove is called the Grandfather. Shaped like a giant slingshot, with two trees sprouting from his base, the Grandfather is about twenty-four stories high and has stood for more than 1,800 years. His rings tell the story. Just beneath the fibrous bark, man landed on the moon. Deeper inside, Columbus sailed across the Atlantic. Toward the core, Mayans were beginning to carve their language into temple walls.

Inside the grove, even on a warm summer day, it is dark and cool. Most of the sunlight is caught in the branches of the giants high above, but in places, it filters down, leaving delicate lacelike patterns on the road.

Keep driving. You’re almost there. Richardson Grove marks the unofficial entrance to Humboldt County. Pass through it and you’ll begin to understand the local saying about living in a world that exists behind the redwood curtain.