We’re pretty accustomed to building underground in Finland. You can find all sorts of English-language articles about it. https://abcnews.go.com/International/

We’re pretty accustomed to building underground in Finland. You can find all sorts of English-language articles about it. https://abcnews.go.com/International/helsinkis-underground-city-reflects-tense-position-russias-neighbor/story?id=84668764 https://abcnews.go.com/International/helsinkis-underground-c...