Question 1

Where is Tani Tunnel?

Accepted Answer

Tani Tunnel is in Hakusan, Ishikawa Prefecture, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of NIPPON SANGOKU does Tani Tunnel appear in?

Accepted Answer

Tani Tunnel appears in EP6 of NIPPON SANGOKU.

Question 3

Can I visit Tani Tunnel?

Accepted Answer

Yes. Tani Tunnel is a real place you can visit. Check what it looks like on Street View before you go.

Question 4

Where was NIPPON SANGOKU filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Tani Tunnel is one of those real places (EP6).