It has been called Japan's underground "Parthenon," a cavernous complex charged with protecting Tokyo from catastrophic flooding, a risk experts warn is growing as the climate changes.br ––––––––––––––––––––––––––––––br Leave a like to support us! Subscribe to our channel and press the bell icon to be the first to watch our videos on YouTube.br br ––––––––––––––––––––––––––––––br Your contribution matters, support us Donate to us to show your support and help us sustain as an independent online news portal that delivers breaking news.