I am currently inside a tunnel with tiled walls and yellow lighting. The road markings consist of dashed white lines, which are common in many countries. The tunnel appears well-maintained and modern. Given the lack of external environmental clues, I suspect this is a major urban tunnel, possibly in Europe. I am not very sure of the location yet.

then: forward

The tunnel walls feature distinct horizontal striping and small, square tiles, which are characteristic of Japanese road tunnels. The signage on the wall uses Japanese characters, confirming my suspicion. The driving side is on the left, consistent with Japan's traffic laws. I am fairly confident this is located in Japan, likely near a major metropolitan area like Tokyo or Osaka.

then: guess