Abandoned Tunnel
In *Monster*, an abandoned tunnel hidden in the mountains is known only to two characters. Its entrance is overgrown with weeds and rust, the interior dark and damp, once used as a secret meeting place.
Scene context
具体集数不详，可能为某关键场景
Visit notes
- 该隧道实际位于长野县诹访市，是一处废弃的铁路隧道“旧瀨澤隧道”。
- 作品中，这座隧道被设定为只有两名主要角色知道的秘密地点，体现了剧中隐秘行动的紧张感。