Akamonue Kofun
kofun period keyhole-shaped burial mound in Shizuoka, Japan
Akamonue Kofun (赤門上古墳) is an early Kofun period (late 4th century) keyhole-shaped burial mound, located in the Uchinō neighborhood of Hamana-ku, Hamamatsu, Shizuoka in the Tōkai region of Japan. The tumulus was designated a Shizuoka Prefecture Historic Site in 1979.
Overview
The Akamonue Kofun is a zenpō-kōen-fun (前方後円墳), which is shaped like a keyhole, having one square end and one circular end, when viewed from above. It is located at an elevation of 35 meters on the eastern edge of the Mikatagahara Plateau, Iwatabara Plateau located east of the Tenryū River. It is now surrounded by a suburban residential development. The name of the burial mound originates from the temple of Ryūsen-in (commonly known as "Akamon-ji"), located south of the mound. Several hundred meters northeast of Akamonyama Kofun are the Inariyama Kofun and Yamanoue Kofun (both unexcavated), and several other burial mounds remain in the surrounding area.
The tumulus is 56.3 meters long, with a posterior circular section of 36.2 meters in diameter and 4.9 meters high, and an anterior rectangular section 14.7 meters wide and 1.15 meters high, orientated to the north. The front rectangular section is low and narrow, a characteristic of older keyhole-shaped tumuli. It was excavated in 1961, although portions of the mound had been damaged due to the construction of air raid shelters during wartime.
“Akamonue Kofun” enters the record as kofun period keyhole-shaped burial mound in Shizuoka, Japan. Crown Archives preserves that source wording while asking what Akamonue, Kofun and kofun can confirm, complicate or overturn.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Jul 12, 2026. The linked authority identifier is Q4700239. Authority coordinates are 34.788, 137.753. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1979 and 1961.
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This entry incorporates text from “Akamonue Kofun” 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.