The Tar Still Bubbles: A Visit to Simi Valley’s Tapo Canyon Tar Pits
(CLAIR | Simi Valley, CA) — Not far from the strip malls and neighborhoods of Simi Valley, the land gets quiet. If you head north into Tapo Canyon and follow a dusty trail for a couple of miles, you’ll stumble onto something strange—something that doesn’t belong in the middle of a suburban hiking route.
It’s not marked with fanfare. There are no crowds. But the tar is there, black and sticky, bubbling out of the ground like it’s been doing for thousands of years.
This is the Tapo Canyon Tar Pits. Not many people in Simi Valley even know they exist. But they’ve been part of the land long before the city had a name.
The tar comes from deep underground. Millions of years ago, this whole area was under the ocean. When the sea pulled back, it left behind layers of organic muck. That muck turned into oil, and that oil still pushes its way up through cracks in the earth. What reaches the surface thickens in the sun. You can smell it before you see it—something like hot asphalt after a summer rain.
Locals who’ve found it often mistake it for a spill at first. One hiker wrote online, “That’s not a spill. That’s a natural seepage of oil.” Another said, “It’s my first time seeing one. I had no idea.”
The tar isn’t new, and it isn’t dangerous. It’s part of California’s history. In fact, oil seeps like this helped inspire the petroleum industry here. But before all that, the Chumash people used this tar to waterproof baskets and line canoes. Their village, Ta’apu, once sat near this very site.
Today, the pits sit quietly along a five-mile trail behind Tapo Canyon Regional Park. It’s a simple walk. Nothing fancy. But at the end, the land speaks—if you’re listening.
Online, people share photos and crack jokes. Some say it needs a “Prop 65 warning sign” or ask if it’s “Rocketdyne juice.” A few reference movie lines like, “I drink your milkshake,” or “Black gold. Simi tea.”
But underneath the humor, there’s real interest. One hiker said, “There are really large puddles of it if you know where to hike.” Another asked, “How far in is it? I’ve heard about this seep for years.” Locals chimed in with directions: “Not far from Cottonwood. Maybe a mile at most.”
Some laugh. Others wonder about its history. But most people walk away surprised that something so old and strange is just sitting there, quietly bubbling, right in their own backyard.
The Tapo Canyon Tar Pits aren’t dramatic. But they don’t have to be. They show you the past in real time. No ticket required. No display case needed.
In a world that’s always moving, the tar pits stay the same. Slow, patient, always bubbling. They remind us there’s more to Simi Valley than roads and rooftops. There’s something older beneath it all—and it’s still alive.
