Underneath Tokyo’s bustling metropolis lies a maze of concrete tunnels built by Nippon Telegraph and Telephone Corporation to hold telephone and Internet cables. Photo: Alexander Martin/The Wall ...

The Tokyo District Court is ordering a partial halt to the construction of an underground tunnel, which caused a large sinkhole to form in Chofu city, because it poses a danger to nearby residents.

Although Tokyo might seem like the antithesis ... The silos are connected by tunnels running 50 metres underground with a ...