Mukaishima
island in Hiroshima, Japan

Mukaishima (向島, Mukaishima) is the northernmost island in the Geiyo Islands chain accommodating Nishiseto Expressway connecting Honshu and Shikoku islands. Its coasts are washed by Seto Inland Sea. The island's highest peak is Takamiyama (高見山) 283.2 m (929 ft) high.
Geography
The Mukaishima is a pear-shaped island and separated from the Honshu mainland by a 200-meter wide strait.
History
1889 - municipalities of Mukaishimachō and Mukaihigashichō covering the entire island are established.
1968 - bridges connecting the island to Onomichi and Iwashi-jima are completed.
1983 - Innoshima bridge is completed.
1991 - the island becomes a filming ground for Chizuko's Younger Sister film directed by Nobuhiko Obayashi in 1991.
2005 - towns of the island are incorporated into Onomichi city.
2013 - cycling and hiking course of Mukaishima is completed.
Begin with the source’s own compact description: “Mukaishima” is island in Hiroshima, Japan. The dossier treats that line as a proposition to test through Mukaishima, island and Hiroshima, not as a finished interpretation.
Why this record matters
The phrase “island in Hiroshima, Japan” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated Jul 16, 2026. The linked authority identifier is Q11415952. Authority coordinates are 34.383, 133.200. None of the 1 selected statements returned an explicit reference. The first chronological checks are 1889, 1968, 1983 and 1991.
Modern boundaries and familiar names can conceal earlier jurisdictions or structures that do not align with the present site. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Mukaishima”, its source revision and the description used here.
- Expand the search: follow Mukaishima primary sources, Mukaishima archive and Mukaishima research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Mukaishima”?
- What physical evidence or contemporary plan supports the description?
- Which authority defined the place, boundary or structure at the relevant date?
Search terms from this dossier
This entry incorporates text from “Mukaishima” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.