CATDOLL: The spaceship structure diagram of "One Punch Man" episode 11 was revealed to be a maze that took 7 years to build

I wonder if those who have watched "One Punch Man" have noticed that there is a huge maze inside the alien spaceship that appeared in the 11th episode of the recent animation. Now the official tweeted that this maze has a prototype, and its prototype is a huge maze drawn by a Japanese old man Kazuo Nomura 30 years ago in 7 years. The official also showed this maze, which looks very impressive. It took 7 years to make it. I wonder how long it will take to walk through it.

The maze inside the spaceship that appears in the animation

Original maze map