Summer is here and it’s time to plan out your weekend activities. Beach days, park dates, and patio drinks can get repetitive. So if you’re looking for something new and thrilling, why not go out and explore some natural wonders like caves in Ontario! Believe us when we say these beauties are worth the trip.

So gather your group of buds and head off on the scenic adventure. Make sure to wear closed-toed shoes and dress accordingly. Some of these caves require purchasing tickets prior to arrival.

Now let’s get into it! Here are 5 of the most exciting caves to explore in Ontario.

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Greig’s Caves


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Located almost four hours away from Toronto, the cave experience can be found just outside of Lions Head at 407 Scenic Caves Rd. Adventure seekers can take part in self-guided tours and enjoy a picnic with a breathtaking view.

According to Greig’s Caves, the area is about 400 mil­lion years old and was once covered by a tropical sea full of life forms such as plant-like animals, crustaceans, living corals, and mol­lusks.

Where: 407 Scenic Caves Rd, Lion’s Head

Bonnechere Caves


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Believe it or not, these caves were formed 500 million years ago at the bottom of a tropical seafloor. You can explore this fascinating network of caves with a guided tour.

A trip to Bonnechere Caves is guaranteed to leave you feeling more inspired and amazed by the wonders of our planet than ever before. And be sure to dress appropriately as it does get a bit chilly down there!

Where: 1247 Fourth Chute Rd, Eganville

Scenic Caves Nature Adventures

The year-round outdoor experience at Scenic Caves is located on one of Canada’s 18 UNESCO biosphere reserves. Explore its forest via a network of 15 km hiking trails and explore its caves with a self-guided tour.

“Descend into the crevasse and explore a labyrinth of caves and caverns 70 ft below the surface. The rewards are plentiful with multiple panoramic vistas of Georgian Bay along limestone cliff edges,” shares its official site.

Where: 260 Scenic Caves Rd, The Blue Mountains

Bruce Peninsula National Park – The Grotto


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The Grotto is visited by hundreds of thousands of people each year for its mesmerizing turquoise water and intricate cave structures, according to the local tourism site Explore The Bruce.

A stunning 45-minute hike past ancient trees, cliff edges, and wild orchids will take you right to The Grotto, a cave carved from ancient limestone and filled with the glittering aqua blue waters of Georgian Bay.

Where: Bruce Peninsula National Park – Tobermory, ON

Tyendinaga Cavern & Caves

Your next adventure awaits! What if we told you that you can journey through one of Ontario’s largest natural caves? The Tyendinaga Cavern & Caves are described as an “exploration destination” unlike any other, right off Highway 401.

Descend underground into a fascinating network of caverns and caves, filled with fossils that date back to 450 million years ago. The geo-thermal temperature control keeps the caves nice and cool during the summer so it’s a great way to escape the heat.

Where: 2623 Harmony Rd, Belleville
When: Open until October 9th, 2023