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https://www.bbc.com/news/world-us-canada-42227846
Amateur explorers have discovered a network of 15,000-year-old caves underneath a Canadian city.
The passageway, which is at least 200 metres long (660ft), was formed during the last ice age underneath what is now the city of Montreal.
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Neat stuff right beneath a major city. Parts of this cave/tunnel complex are only accessable by boat.
Amateur explorers have discovered a network of 15,000-year-old caves underneath a Canadian city.
The passageway, which is at least 200 metres long (660ft), was formed during the last ice age underneath what is now the city of Montreal.
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Neat stuff right beneath a major city. Parts of this cave/tunnel complex are only accessable by boat.
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