Where to Visit the World’s Oldest Known Forest (It’s Not Where You’d Expect)
Here’s a fun fact for you: the world’s oldest known forest isn’t in some tropical paradise or lush national park. Nope, it’s in Upstate New York. Yes, New York. Specifically, a small town called Cairo (pronounced like “care-oh,” not like the Egyptian city), which is located in the Catskill Mountains.
It might not sound like the place to uncover ancient Earth secrets, but trust me, this spot holds the fossilized remains of a forest that existed over 385 million years ago. That’s older than dinosaurs—older than almost anything you’ve ever heard of. So, let’s uncover all of the secrets of this prehistoric wonder.
A Surprise Discovery
The story starts in 2009 when some researchers were digging around in an old quarry in Cairo, New York. They weren’t looking for anything super exciting—just doing the usual geology stuff—when they stumbled upon something jaw-dropping: fossilized tree roots. But these weren’t just any tree roots.
As scientists started piecing it all together, they realized these fossils belonged to an ancient forest that dated back to the Devonian period. That’s the era when plants were just starting to spread across the planet, evolving from small, mossy patches into actual trees. This was a literal game-changer for understanding how life on Earth developed.
What Makes It So Special?
For one thing, it’s the world’s oldest known forest we’ve ever discovered. And by forest, I don’t mean a random collection of trees. This place had actual ecosystems, with different species of plants and trees working together to shape the environment.
The forest included some of the first tree-like plants ever to exist, like the Archaeopteris, which had fern-like leaves and woody trunks. There were also smaller plants like cladoxylopsids, which were kind of like the ancestors of modern trees.
These trees helped change Earth’s atmosphere. Back then, the planet’s air was packed with carbon dioxide, and forests like this one played a massive role in absorbing CO2 and pumping out oxygen. Basically, they helped set the stage for all the land animals that came after—including us.

Visiting the Fossilized Forest
Sadly, the forest isn’t exactly a tourist attraction—yet. Most of the fossils are still in the quarry where they were found, and scientists are super protective of them (for good reason). But that doesn’t mean you can’t get a taste of this ancient wonder.
Cairo itself is a charming little town, and the surrounding Catskills are perfect for hiking, exploring, and soaking up nature. Plus, the New York State Museum in Albany sometimes displays fossils and info about the forest. It’s a great way to see pieces of the ancient world without needing a geology degree.
If you’re as nerdy about ancient history as I am, you’ll definitely want to put Cairo on your travel list. While you can’t roam through the fossilized forest itself, just being in the area gives you a sense of connection to the past. Take a hike in the Catskills, visit local museums, and who knows? With discoveries like this, there’s always a chance for more surprises.