Explorers find massive ice-age cavern beneath Montreal

Explorers find massive ice-age cavern beneath Montreal

Explorers have just discovered a new underground passage, complete with stalactites and a lake, all buried beneath the city of Montreal — and they don't know where it ends yet.

Until a couple of months ago, no one had ever set foot inside.

CBC crews were among the first people who had the chance to explore the cathedral-like chamber, which was formed more than 15,000 years ago during the ice age.