A Ramped Stone Platform With a Gabled Shelter
The up-line platform at Sori Station in Midori, Gunma Prefecture, is a stone structure seventy-nine meters long, built with a ramp at each end so that its surface rises and falls into the track bed rather than ending in a step. The retaining wall on the track side is mortared masonry, standing sixty-nine centimeters above the rails, and it keeps the profile it was given when the platform was laid. This is the eastern side of the tracks at Sori, paired with a longer down-line platform opposite.
At the center stands a small waiting shelter, a wooden single-story building measuring five and a half meters along the ridge and one and eight-tenths meters across, roofed in a simple gable clad with cement tiles. Its footprint is just under ten square meters. The building is unassuming, a piece of country-station carpentry sized for a handful of waiting passengers, and it has held its place at the middle of the platform for the better part of a century.
Two Dates and a Heritage Listing
The platform dates to 1912, when the private Ashio Railway opened this length of line up the Watarase gorge to carry copper ore down from the Ashio mine. The waiting shelter was built in 1929. The line was nationalized in 1918 as the government's Ashio Line, and after the mine closed in 1973 it passed in 1989 to the third-sector Watarase Keikoku Railway, which still calls here.
On 2 November 2009, with formal notice on 19 November, the up-line platform and its shelter were registered together as a single Registered Tangible Cultural Property, among about three dozen structures along the line listed as a group. Registration sits below the "Important Cultural Property" designation as a lighter form of protection, covering structures generally over fifty years old and allowing them to stay in use. The listing rests on the platform's part in the historic landscape of the country, the landscape of an early mountain railway that has kept running.
Where It Sits, and How It Compares
The up-line platform stands about 1,050 meters southwest of the Nagoshi Tunnel, one of the many bores that carry the line through the ridges of this valley. Sori is an unmanned but active station, so unlike the tunnels and bridges nearby, this platform is open to anyone traveling the route. A visitor can step off, walk the ramped stone, and look at the gabled shelter at close range.
Set beside its partner across the tracks, the up-line platform is the shorter of the two at seventy-nine meters against the down-line's ninety-nine, and its shelter, from 1929, is two years younger than the one opposite. The ramped ends and the low mortared wall are its own distinguishing marks. The line around Sori is planted with hanamomo flowering peach that colors the tracks in late April, which makes spring a good season to ride out and stand on both platforms in turn.
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Q&A
- Can I stand on this platform?
- Yes. Sori is an active unmanned station, and its platforms are open to travelers on the Watarase Keikoku line.
- How is it different from the down-line platform?
- This up-line side is seventy-nine meters, shorter than the down-line's ninety-nine, with ends built as ramps and a shelter from 1929. The down-line shelter dates to 1927.
- What are the dimensions of the shelter?
- It is a wooden single-story building about 5.5 meters long and 1.8 meters deep, with a gabled cement-tile roof and a floor area just under ten square meters.
- What is nearby on the line?
- The Nagoshi Tunnel lies about 1,050 meters to the northeast, and the flowering peach planted around Sori draws visitors in spring.
Basic Information
| Name | Watarase Keikoku Railway Sori Station Up-Line Platform and Waiting Shelter |
|---|---|
| Location | Sori, Azuma-cho, Midori City, Gunma Prefecture |
| Designation | Registered Tangible Cultural Property (registered 2 November 2009; notice 19 November 2009) |
| Registration No. | 10-0280 |
| Count | 1 building |
| Date | Platform 1912; waiting shelter 1929 |
| Structure | Stone platform 79 m long; waiting shelter of wood, single story, gabled cement-tile roof, floor area 9.9 sq m |
| Access | Open to travelers as an active platform at unmanned Sori Station |
References
- National Database of Designated Cultural Properties, Agency for Cultural Affairs — Watarase Keikoku Railway Sori Station Up-Line Platform and Waiting Shelter
- https://kunishitei.bunka.go.jp/bsys/maindetails/101/00007853
- Watarase Keikoku Railway Co., Ltd. — Company History
- https://www.watetsu.com/company/history.php
- Watarase Keikoku Line (Japanese Wikipedia)
- https://ja.wikipedia.org/wiki/わたらせ渓谷鐵道わたらせ渓谷線
Last verified: 2026.07.02