The is a

peninsula A peninsula is a landform that extends from a mainland and is only connected to land on one side. Peninsulas exist on each continent. The largest peninsula in the world is the Arabian Peninsula. Etymology The word ''peninsula'' derives , . T ...

located in

Nagasaki Prefecture is a Prefectures of Japan, prefecture of Japan, mainly located on the island of Kyūshū, although it also includes a number of islands off Kyūshū's northwest coast - including Tsushima and Iki. Nagasaki Prefecture has a population of 1,246,4 ...

on the island of

Kyushu is the third-largest island of Japan's Japanese archipelago, four main islands and the most southerly of the four largest islands (i.e. excluding Okinawa Island, Okinawa and the other Ryukyu Islands, Ryukyu (''Nansei'') Ryukyu Islands, Islands ...

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

. The peninsula incorporates the cities of Shimabara, Minamishimabara, and Unzen. The northern, eastern, and southeastern coasts of the peninsula face the

Ariake Sea The is a body of salt water surrounded by Fukuoka, Saga, Nagasaki, and Kumamoto Prefectures, all of which lie on the island of Kyūshū in Japan. It is the largest bay in Kyūshū. Its deepest point is only about 50 meters (165 ft) deep, and ext ...

, and the western coast faces Tachibana Bay. An active group of volcanoes known collectively as

Mount Unzen is an active volcanic group of several overlapping stratovolcanoes, near the city of Shimabara, Nagasaki on the island of Kyushu, Japan's southernmost main island. In 1792, the collapse of one of its several lava domes triggered a megatsuna ...

lies in the middle of the peninsula, with many hot springs, such as Unzen Onsen and the extremely hot Obama Onsen. The peninsula was also the site of the

Shimabara Rebellion The , also known as the or , was an rebellion, uprising that occurred in the Shimabara Domain of the Tokugawa shogunate in Japan from 17 December 1637 to 15 April 1638. Matsukura Katsuie, the ''daimyō'' of the Shimabara Domain, enforced unpo ...

, a 1637–1638 peasant and

rōnin In feudal Japan to early modern Japan (1185–1868), a ''rōnin'' ( ; , , 'drifter' or 'wandering man', ) was a samurai who had no lord or master and in some cases, had also severed all links with his family or clan. A samurai became a ''rō ...

revolt led by

Christian A Christian () is a person who follows or adheres to Christianity, a Monotheism, monotheistic Abrahamic religion based on the life and teachings of Jesus in Christianity, Jesus Christ. Christians form the largest religious community in the wo ...

s. This further reinforced distrust of Christians and foreigners by Shōgun Iemitsu and contributed to the 1639 decision to isolate Japan from the outside world. From then on, the Dutch and the Chinese were the only ones permitted to enter Japan through Nagasaki in a very limited fashion until Japan was reopened again.Hane, Modern Japan: A Historical Survey, p. 24

Administrative region

*Eastern section of Isahaya * Shimabara * Minamishimabara * Unzen

References

Landforms of Nagasaki Prefecture Peninsulas of Japan {{Nagasaki-geo-stub