The City Beneath Toronto

​12,000 years ago, all of Toronto was covered in a mile-high glacier. When the ice age ended and the earth began to warm, that melting glacier water carved out enormous valleys in the ground, leaving Toronto with the largest ravine system of any city in the world.

The ravines are a hidden underworld, an untrammelled space beneath the city's walls. But it can feel like these natural spaces are being intentionally hidden: their entrances are often obscured, known only to the (often wealthy) locals whose houses abut their borders. On this tour, we will walk The City Beneath Toronto.

Duration: 3hrs

Location: The tour begins at Craigleigh Gardens, a short walk from Castle Frank subway station. The tour will end at Evergreen Brickworks, which has bus access back to the city, and is itself a 15-20 minute walk from Castle Frank.

Price: This tour operates on a pay-what-you-can basis. There is no up-front cost or booking fee. At the end of the tour, you can pay whatever you feel the tour was worth (cash or card both accepted). Most guests choose to pay between $25 - $40 per person.

​Accessibility: this tour takes place along bumpy ravine trails. There are no stairs, but the paths to access ravines can be a bit steep.

​Disclaimer: By booking this tour you acknowledge that you accept personal responsibility for your safety. You understand and confirm that you are participating in this tour voluntarily, and understand the associated risks. You must be sure to obey all rules of the road, including waiting at red lights, staying on sidewalks, and crossing at designated crosswalks. For your own safety, you must stick to the designated walking paths. You release Hidden Rivers Tours and Matthew Jordan from any liability.