A Concrete Tunnel Portal of 1951 for a Belt Conveyor

The Former Hokutan Yubari Coal Mine Takamatsu Spoil Line Belt Tunnel West Portal (旧北炭夕張炭鉱高松ズリ捨線ベルト隧道西坑門) is the concrete west portal of a tunnel that once held a belt conveyor of 1951 in Shako, Yubari City, Hokkaido, and was registered as a Registered Tangible Cultural Property (structure) on October 18, 2006 (Agency for Cultural Affairs).

The Agency records a concrete portal 8.9 metres wide; registration number 01-0076.

The West Portal of the Belt Tunnel

The west portal of the Belt Tunnel on the Takamatsu spoil line, about 500 metres west of the arch bridge, dates from 1951 (Agency for Cultural Affairs). It is the concrete portal at the west end of a tunnel with a half-round arched section 2.5 metres across, and measures 8.9 metres wide and 3.3 metres high.

It is part of a structure known as the Belt Tunnel, because a belt conveyor once ran inside it (Agency for Cultural Affairs).

Why It Was Registered

The Agency registered it for its contribution to the historic landscape.

What to Look For

At the west portal, look for the 8.9-metre concrete face around the half-round arched bore (Agency for Cultural Affairs).

Visiting

The owner is not listed in the Agency record. Of the seven registered remains of the Hokutan Yubari Coal Mine, the mock tunnel and Tenryu pit portals lie in the grounds of the Yubari Coal Mine Museum, but no official information on visiting this structure was found. The seven are introduced together on the Former Hokutan Yubari Coal Mine page.

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Q&A

QWhen was it built?
AIn 1951 (Agency for Cultural Affairs).
QWhy is it called the Belt Tunnel?
AA belt conveyor ran inside it.
QHow big is the portal?
A8.9 metres wide, 3.3 metres high.
QWhere is it?
AAbout 500 metres west of the arch bridge.
QWhen was the Former Hokutan Yubari Coal Mine Takamatsu Spoil Line Belt Tunnel West Portal registered?
AOn October 18, 2006 (Agency for Cultural Affairs).

Basic Information

NameFormer Hokutan Yubari Coal Mine Takamatsu Spoil Line Belt Tunnel West Portal (旧北炭夕張炭鉱高松ズリ捨線ベルト隧道西坑門)
LocationShako, Yubari City, Hokkaido
DesignationRegistered Tangible Cultural Property (Structure)
Year DesignatedRegistered 2006/10/18 (Heisei 18)
Quantity1 building
DimensionsConcrete, 8.9 m wide
OwnerNot listed in the Agency database
Public AccessNo official information on access

References

Former Hokutan Yubari Coal Mine Takamatsu Spoil Line Belt Tunnel West Portal (Database of National Cultural Properties, Agency for Cultural Affairs)
https://kunishitei.bunka.go.jp/heritage/detail/101/00005716

Last verified: 2026.11.07