was an
old province of
Japan
Japan ( ja, 日本, or , and formally ) is an island country
An island country or an island nation is a country
A country is a distinct territory, territorial body
or political entity. It is often referred to as the land of an in ...

which today consists of the eastern part of
Shimane Prefecture
is a Prefectures of Japan, prefecture of Japan located in the Chūgoku region of Honshu. Shimane Prefecture is the List of Japanese prefectures by population, second-least populous prefecture of Japan at 665,205 (February 1, 2021) and has a geo ...
. It was sometimes called . The province is in the
Chūgoku Region
The , also known as the region, is the westernmost region
In geography
Geography (from Ancient Greek, Greek: , ''geographia'', literally "earth description") is a field of science devoted to the study of the lands, features, inhabita ...
.
History
During the early Kofun period (3rd century) this region was independent and constructed rectangular
tumuli
A tumulus (plural tumuli) is a mound
A mound is a heaped pile of earth
Earth is the third planet from the Sun and the only astronomical object known to harbour and support life. 29.2% of Earth's surface is land consisting of co ...

. But in the fourth century this region saw the construction of rectangular and key shaped tumuli.
During the 6th or 7th century it was absorbed due to the expansion of the state of
Yamato
was originally the area around today's Sakurai City in Nara Prefecture of Japan, which became Yamato Province and by extension a name for the whole of Japan.
Yamato is also the dynastic name of the ruling Imperial House of Japan.
Japanese hist ...
,
within which it assumed the role of a
sacerdotal
Sacerdotalism (from Latin
Latin (, or , ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken in the area around Rome, known as Latium. Through the power of the ...

domain.
Even today, the
Izumo Shrine
, officially Izumo Ōyashiro, is one of the most ancient and important Shinto shrine
A is a structure whose main purpose is to house ("enshrine") one or more ''kami
(often taken to mean "gods
A deity or god is a supernatural
...
constitutes (as does the
Grand Shrine of Ise
The , located in Ise, Mie Prefecture
is a prefecture of Japan
, image_flag = Flag of Japan.svg
, alt_flag = Centered deep red circle on a white rectangle
, image_coat = Imperial S ...
) one of the most important sacred places of
Shinto
Shinto () is a religion which originated in Japan. Classified as an East Asian religions, East Asian religion by Religious studies, scholars of religion, its practitioners often regard it as Japan's indigenous religion and as a nature religion. ...

: it is dedicated to ''
kami
(often taken to mean "gods
A deity or god is a supernatural
The supernatural encompasses supposed phenomena or entities that are not subject to the laws of nature. This term is attributed to non-physical entities, such as angel
...
'', especially to
Ōkuninushi
Ōkuninushi ( historical orthography: ''Ohokuninushi''), also known as Ō(a)namuchi (''Oho(a)namuchi'') or Ō(a)namochi (''Oho(a)namochi'') among other variants, is a ''kami
(often taken to mean "gods
A deity or god is a supernatural
...
(''Ō-kuni-nushi-no-mikoto''), mythical progeny of
Susanoo
__FORCETOC__
Susanoo (; historical orthography: , ) is a in Japanese mythology
Japanese mythology is a collection of traditional stories, folktales, and beliefs that emerged in the islands of the Japanese archipelago. Shinto and Buddhism, ...
and all the clans of Izumo. The mythological mother of Japan, the goddess
Izanami
is a creator deity
A creator deity or creator god (often called the Creator) is a deity
A deity or god is a supernatural
The supernatural encompasses supposed phenomena that are not subject to the laws of nature.https://www.merri ...
, is said to be buried on Mt. Hiba, at the border of the old provinces of Izumo and
Hōki, near modern-day
Yasugi
is a Cities of Japan, city located in Shimane Prefecture, Japan. As of March 1, 2017, the city has an estimated population of 38,875 and a population density of 92 persons per km². The total area is .
Yasugi was elevated to city status on April ...
of
Shimane Prefecture
is a Prefectures of Japan, prefecture of Japan located in the Chūgoku region of Honshu. Shimane Prefecture is the List of Japanese prefectures by population, second-least populous prefecture of Japan at 665,205 (February 1, 2021) and has a geo ...
.
By the
Sengoku period
The is a period in History of Japan, Japanese history of near-constant civil war, social upheaval, and intrigue from 1467 to 1615.
The Sengoku period was initiated by the Ōnin War in 1467 which collapsed the Feudalism, feudal system of Japan ...
, Izumo had lost much of its importance. It was dominated before the
Battle of Sekigahara
The Battle of Sekigahara (Shinjitai
are the simplified forms of kanji
are the adopted logographic Chinese characters that are used in the Japanese writing system. They are used alongside the Japanese language, Japanese syllabic sc ...

by the
Mōri clan
The Mōri clan (毛利氏 ''Mōri-shi'') was a Japanese samurai clan descended from Ōe no Hiromoto. The family's most illustrious member, Mōri Motonari, greatly expanded the clan's power in Aki Province
or Geishū () was a Provinces of ...
, and after Sekigahara, it was an independent fief with a castle town at modern
Matsue
is the capital Cities of Japan, city of Shimane Prefecture, Japan, located in the Chūgoku region of Honshu. The city has an estimated population of 202,008 (February 1, 2021) following the merger with Higashiizumo, Shimane, Higashiizumo from Yat ...
.
In Japanese mythology, the entrance to
Yomi
is the Japanese
Japanese may refer to:
* Something from or related to Japan
Japan ( ja, 日本, or , and formally ) is an island country
An island country or an island nation is a country
A country is a distinct territory, ...
(Hell, land of the dead) was located within the province, and was sealed by the god
Izanagi
Izanagi (イザナギ) or Izanaki (イザナキ) is a creator deity
A creator deity or creator god (often called the Creator) is a deity
A deity or god is a supernatural
The supernatural encompasses supposed phenomena that are not s ...
by placing a large boulder over the entrance.
Historical districts
*
Shimane Prefecture
is a Prefectures of Japan, prefecture of Japan located in the Chūgoku region of Honshu. Shimane Prefecture is the List of Japanese prefectures by population, second-least populous prefecture of Japan at 665,205 (February 1, 2021) and has a geo ...
**
Aika District (秋鹿郡) - merged with Ou and Shimane Districts to become
Yatsuka District (八束郡) on April 1, 1896
**
Iishi District (飯石郡)
**
Izumo District (出雲郡) - merged with Kando and Tatenui Districts to become
Hikawa District (簸川郡) on April 1, 1896
**
Kando District (神門郡) - merged with Izumo and Tatenui Districts to become Hikawa District on April 1, 1896
** Nita District, Shimane, Nita District (仁多郡)
** Nogi District, Shimane, Nogi District (能義郡) - dissolved
** Ohara District, Shimane, Ohara District (大原郡) - dissolved
** Ou District, Shimane, Ou District (意宇郡) - merged with Aika and Shimane Districts to become Yatsuka District on April 1, 1896
** Shimane District, Shimane, Shimane District (島根郡) - merged with Aika and Ou Districts to become Yatsuka Districton April 1, 1896
** Tatenui District, Shimane, Tatenui District (楯縫郡) - merged with Izumo and Kando Districts to become Hikawa District on April 1, 1896
See also
* Hirose Domain
* Mori Domain (Izumo)
* Matsue Domain
Notes
References
* Louis-Frédéric, Nussbaum, Louis-Frédéric and Käthe Roth. (2005)
''Japan encyclopedia.''Cambridge: Harvard University Press.
OCLC 58053128
External links
Izumo Province,
{{Shimane-geo-stub