Sado Island Gold Mines


World Heritage Identification Number: 1698

World Heritage since: 2024

Category: Cultural Heritage

Transboundary Heritage: No

Endangered Heritage: No

Country: 🇯🇵 Japan

Continent: Asia

UNESCO World Region: Asia and the Pacific

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Sado Island Gold Mines: A Unique Serial Property in Japan's Volcanic Landscape

The Sado Island Gold Mines, inscribed as a UNESCO World Heritage Site in 2024, offers a captivating glimpse into Japan's rich mining history. Located off the coast of Niigata Prefecture, this serial property spans across three distinct areas, each showcasing unique mining techniques that predate mechanization.

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UNESCO Description of the World Heritage Site

The Sado Island Gold Mines is a serial property located on Sado Island, some thirty-five kilometres west of the Niigata Prefecture coast. It is formed of three component parts illustrative of different unmechanised mining methods. Sado Island is of volcanic origin and features two parallel mountain ranges stretching from southwest to northeast and separated by one alluvial plain, the Kuninaka Plain. Gold and silver deposits were formed by the rising of hydrothermal water close to the land surface and forming veins in the rock; tectonic activity first submerged the surface deposits to the seabed, which was later raised again by tectonic movements. Placer deposits were exploited in Nishimikawa Area, located on the north-western side of the Kosado Mountains. In addition, the weathering of the volcanic rock exposed ore veins, which were mined underground at the land surface and deep underground in the Aikawa-Tsurushi Area, at the southern end of the Osado Mountains range. Mostly tangible attributes reflecting mining activities and social and labour organisation are preserved as archaeological elements, both above and below ground, and landscape features.

Encyclopedia Record: Sado Island

Sado Island is an island located in the eastern part of the Sea of Japan, under the jurisdiction of Sado City, Niigata Prefecture, Japan, with a coastline of 262.7 kilometres (163.2 mi). In October 2017, Sado Island had a population of 55,212 people. Sado Island covers an area of 854.76 km2 (330.02 sq mi), and is the second largest island after Okinawa Island outside of the four main islands of Japan, excluding the disputed Southern Kurils. The shortest distance between Sado Island and Honshu is 32 km (20 mi). The highest peak on Sado Island is Mount Kinpoku, with an elevation of 1,172 m (3,845 ft).

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Additional Site Details

Area: 750.9 hectares

UNESCO Criteria: (iv) — Outstanding example of a type of building or landscape

Coordinates: 38.0408333333 , 138.2577777778

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Image of Sado Island Gold Mines

Image Science and Analysis Laboratory, NASA - Johnson Space Center. "The Gateway to Astronaut Photography of Earth.", Public domain

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Country Information: Japan

Flag of Japan

Official Name: Japan

Capital: Tokyo

Continent: Asia

Population (2024): 123,975,371

Population (2023): 124,516,650

Population (2022): 125,124,989

Land Area: 364,500 sq km

Currency: Japanese yen (JPY)

Country Data Sources

Last updated: January 18, 2026

Portions of the page Sado Island Gold Mines are based on data from UNESCO — World Heritage List Dataset and on text from the Wikipedia article Sado Island, licensed under CC BY-SA 4.0. Changes made. Additional original content by World Heritage Explorer (WHE), licensed under CC BY-SA 4.0. WHE is not affiliated with UNESCO or the World Heritage Committee. Legal Notice. Privacy Policy.

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