Wikimedi'Òc

Map of Nakayama tunnel Joetsu Shinkansen ja.png - Tam0031

Geological map of Nakayama tunnel Joetsu shinkansen as of 1973 ja.png - Tam0031

Geological map of Nakayama tunnel Joetsu shinkansen as of 1976 ja.png - Tam0031

Nakayama tunnel Shihougi division detour tunnel map ja.png - Tam0031

Nakayama tunnel first route change map ja.png - Tam0031

Nakayama tunnel second route change map ja.png - Tam0031

Nakayama tunnel map ja.png - Tam0031

Map of Nakayama tunnel and surrounding area.svg - 軽快

Nakayama tunnel north entrance of the Joetsu Shinkansen A.jpg - さかおり

Nakayama tunnel north entrance of the Joetsu Shinkansen B.jpg - さかおり

Nakayama tunnel north entrance of the Joetsu Shinkansen C.jpg - さかおり

Northern side of Nakayama tunnel Nagurumi construction area of Joetsu Shinkansen A.jpg - さかおり

Northern side of Nakayama tunnel Nagurumi construction area of Joetsu Shinkansen B.jpg - さかおり

Trace of construction work for Nakayama district vertical shaft construction.jpg - さかおり

Wadanoue water reservoir.jpg - さかおり

Trace of construction work for Takayama district vertical shaft construction.jpg - さかおり

Trace of construction work for Shihogi district vertical shaft construction C.jpg - さかおり

Trace of construction work for Shihogi district vertical shaft construction B.jpg - さかおり

Trace of construction work for Shihogi district vertical shaft construction A.jpg - さかおり

Trace of construction work for Onogami-Kita district inclined shaft construction.jpg - さかおり

Yagisawa water pumping facility A.jpg - さかおり

Yagisawa water pumping facility B.jpg - さかおり

Water discharge tower of Nakayama Tunnel South Exit A.jpg - さかおり

Water discharge tower of Nakayama Tunnel South Exit B.jpg - さかおり

Nakayama tunnel Onogami-Minami retention basin at adit entrance.jpg - さかおり

Nakayama tunnel Onogami-Minami adit entrance of Joetsu Shinkansen.jpg - さかおり