These caves in Ontario are 12,000 years old and connected by underground tunnels

Ever gone spelunking? Well, I haven’t either, but luckily, there’s a spot in Ontario where you can do just that! Head to the Warsaw Caves Conservation Area and explore its seven limestone caves.

Just a short drive east of Toronto are the Warsaw Caves, described as having a “unique” natural landscape by Destination Ontario.

Eager spelunkers could spend hours exploring the limestone caves, some of which are connected and beginner-friendly.

The Warsaw Caves Conservation Area itself consists of hiking trails that “wind through lush forests and limestone plains, with scenic lookout points to stop at along the way. The calm waters of the Indian River are perfect for canoeing or kayaking,” shares Destination Ontario.

How were the Warsaw Caves formed?

These caves are so old that they were formed around the end of the last Ice Age — about 12,000 years ago.

“The unique geography of the caves is made up of cavities in limestone, and the round caves are known as ‘kettles,'” states Destination Ontario.

“These spiral depressions were created when pieces of stone were swirled around into the limestone by the ancient river that used to cover the entire area.”

Once the Ice Age ended and the river started to recede, the ground rose and unveiled the limestone caves.

And since then, they have been open for exploration.

What should I know before exploring the caves?

If you’re eager to explore the caves, make sure to wear sturdy shoes and bring a flashlight with you. Safety first!

And don’t worry if this is your first time exploring caves; these are beginner-friendly.

“Each visitor is given a Spelunking Guide upon arrival that will lead you through each cave,” shares Destination Ontario.

“Embark on a self-guided tour of the caves to witness amazing limestone formations and hear the sounds of the Indian River as it flows along the limestone layers surrounding the caves.”

The conservation area is open until Oct. 14, 2025, so you have plenty of time to head on a spelunking adventure.

What else can I do here?

Besides the caverns, according to Otonobee Conservation, the Warsaw Caves Conservation Area features more than 15 km of hiking trails.

Its trails guide you through limestone plains and forests, with kettles and pothole sightings along the way.

But for a stunning view, head to the scenic lookout points that overlook the Indian River Valley.

The views, the walk, the journey — it’s all a memorable experience.

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