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Dainichi Dake
Japan · Elevation not verified
Reviewed routes
No reviewed route is included. Missing route information does not establish safe or legal access.
About this mountain
Dainichi Dake is in the Iide Mountains of Niigata Prefecture, Japan. Niigata Prefectural Police identifies it as the highest peak of the Iide range.
Sources and scope
SelectedGSI大日岳row37deg49min58sec139deg39min37sec only; noheightprojected
NamedselectedIideDainichi, notGifu/Toyamahomonyms; noheight
- 日本の主な山岳 大日岳飯豊山地 — GeospatialInformationAuthorityJapan · checked 2026-10-29
- 飯豊連峰安全登山情報 — NiigataPrefecturalPolice · checked 2026-10-29
Access & planning
Tainai City lists the Ashinomatsu ridge trail from its trailhead to the Oishiyama junction as closed from 1 June to 30 November 2026, with the end date marked as planned.
Only this named approach section; no assertion that every Dainichi route is closed or that access automatically resumes afterward.
2026-10-29T06:14:40.140998+00:00
Sources and scope
OnlynamedTainaisection; notallDainichiroutes orwholesummitclosure; noautomaticreopening
- 飯豊連峰登山について令和8年度閉鎖 — TainaiCity · checked 2026-10-29
Geology & landscape
The 1997 Iide regional management plan describes the range as an uplifted granitic massif with asymmetric ridges shaped by winter snow accumulation.
Historical regional interpretation, not an exact summit rock or age assignment.
Sources and scope
RegionalIiderangeinterpretation; noexactsummitmapunitmineralageorcurrentsnowdepth
- 磐梯朝日国立公園飯豊地域管理計画書 — Japan EnvironmentAgency NatureConservationBureau · checked 2026-10-29
Nature & wildlife
The wider Iide mountain region has extensive beech forests.
Regional habitat context; no forest or individual species occurrence is asserted on this summit.
Sources and scope
Regionalmountain/watershedhabitat; notDainichisummitforestorindividualspeciesoccurrence
- 飯豊の自然 — MLIT IideMountainSaboOffice · checked 2026-10-29