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Sado Island (佐渡島, Sadogashima or Sadoshima) 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.[1] The shortest distance between Sado Island and Honshu is 32 km (20 mi).[2] The highest peak on Sado Island is Mount Kinpoku, with an elevation of 1,172 m (3,845 ft).[3]
Native name: 佐渡島 | |
|---|---|
 Topographic map of Sado Island | |
 | |
| Geography | |
| Location | Japanese Archipelago |
| Coordinates | 38°04′03″N 138°23′51″E / 38.06750°N 138.39750°E |
| Area | 854.76[1] km2 (330.02 sq mi) |
| Highest elevation | 1,172 m (3845 ft) |
| Highest point | Mount Kinpoku |
| Administration | |
During World War II, the island was the site of forced labor. Around 1,500 Korean laborers were conscripted to work in difficult and inferior conditions in mines on the island. The Japanese government and some Japanese scholars have denied that they were forced to work. In 2022, Japan filed to add the mines of the island to the UNESCO World Heritage Site list, which sparked international and domestic criticism, particularly from South Korea. An exhibit about the harsh working conditions suffered by Korean laborers was established, after which South Korea supported the bid. However, some have criticized the exhibit as not explicitly mentioning the use of forced labor.[4] In 2024, the Sado Island Gold Mines were registered as a World Heritage Site.[5][6] South Korea requested that Japan mention forced labor in the exhibit, and Japan rejected this request.[7]
Geography
editThe shape of Sado Island resembles the kanji character for ‘work’ (工) in Japanese or the letter ‘S’. The topography of the island can be roughly divided into three parts, the Ōsado range in the north, the Kosado range in the south, and the Kakakura plain with flat terrain in between. The Ōsado range area is higher in altitude, and the highest peak of Sado Island, Mount Kinpoku (1,172 m (3,845 ft) above sea level), is also located in this area. The coastline on the north side of Mount Sado is steep, and is a famous tourist spot, among which the Senkaku Bay is the most famous.[8] The Kosado range has a relatively flatter terrain with Satsuma orange and tea trees growing there. Its highest peak is Mount Ōjiyama, with an elevation of 646 m (2,119 ft).[9] The Nakakura Plain is a large plain in Japan's outlying islands and is also the agricultural area of Sado Island. On the west side of the Kuninaka Plain is Mano Bay, and on the east side is Ryōtsu Bay. The Kokufugawa River (also reads Konogawa River) flows through the Kuninaka Plain, with a total length of 19 km (12 mi), and flows into Mano Bay. Its watershed area accounts for 20% of Sado Island.[10] Lake Kamo, the largest lake in Niigata Prefecture, is located at the eastern end of the Kuninaka Plain. Lake Kamo was originally a freshwater lake, and later turned into a lagoon after an opening built to the Sea of Japan. Oyster breeding flourishes in the lake.[11] Part of Sado Island belongs to the Sado-Yahiko-Yoneyama Quasi-National Park.[12]
Gallery
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Weather and climate
editAffected by the warm Black Current that passes through the Sado waters, the winter in Sado Island is warmer than that in Niigata Prefecture and with less snow. In summer, due to the influence of ocean, the temperature difference between day and night is smaller than that of Niigata Prefecture, and is cooler than that of Niigata Prefecture. However, the Aikawa area on the northwestern side of the Ōsado range are affected by the monsoon blowing from the northwest and the temperature is higher. Precipitation on Sado Island is mainly concentrated in the end of the East Asian rainy season and early winter, and there is less precipitation than in Niigata Prefecture. When the low air pressure and typhoons pass through the Sea of Japan, Sado Island often suffers from Foehn wind, raising the temperature sharply. Located at the junction of the warm and cold current, Sado City enjoys diverse plants and rich aquatic resources.
| Climate data for Aikawa, Sado, Niigata, 1991−2020 normals, extremes 1911−present | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 17.0 (62.6) |
20.7 (69.3) |
22.3 (72.1) |
28.0 (82.4) |
30.0 (86.0) |
34.1 (93.4) |
37.4 (99.3) |
38.1 (100.6) |
37.4 (99.3) |
31.5 (88.7) |
26.3 (79.3) |
22.9 (73.2) |
38.1 (100.6) |
| Mean daily maximum °C (°F) | 6.5 (43.7) |
6.7 (44.1) |
9.6 (49.3) |
14.9 (58.8) |
19.9 (67.8) |
23.3 (73.9) |
27.1 (80.8) |
29.3 (84.7) |
25.9 (78.6) |
20.5 (68.9) |
15.0 (59.0) |
9.7 (49.5) |
17.4 (63.3) |
| Daily mean °C (°F) | 4.0 (39.2) |
4.0 (39.2) |
6.5 (43.7) |
11.1 (52.0) |
15.9 (60.6) |
19.8 (67.6) |
24.0 (75.2) |
26.0 (78.8) |
22.5 (72.5) |
17.2 (63.0) |
11.8 (53.2) |
6.8 (44.2) |
14.1 (57.4) |
| Mean daily minimum °C (°F) | 1.3 (34.3) |
1.0 (33.8) |
2.9 (37.2) |
7.2 (45.0) |
12.0 (53.6) |
16.6 (61.9) |
21.3 (70.3) |
22.9 (73.2) |
19.2 (66.6) |
13.6 (56.5) |
8.2 (46.8) |
3.8 (38.8) |
10.8 (51.5) |
| Record low °C (°F) | −7.5 (18.5) |
−7.4 (18.7) |
−6.4 (20.5) |
−2.1 (28.2) |
2.5 (36.5) |
7.6 (45.7) |
12.1 (53.8) |
14.6 (58.3) |
9.5 (49.1) |
4.4 (39.9) |
−2.8 (27.0) |
−6.6 (20.1) |
−7.5 (18.5) |
| Average precipitation mm (inches) | 131.1 (5.16) |
91.6 (3.61) |
96.6 (3.80) |
94.5 (3.72) |
97.3 (3.83) |
122.5 (4.82) |
207.3 (8.16) |
137.5 (5.41) |
139.9 (5.51) |
133.1 (5.24) |
154.8 (6.09) |
175.7 (6.92) |
1,581.9 (62.27) |
| Average snowfall cm (inches) | 28 (11) |
25 (9.8) |
4 (1.6) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
9 (3.5) |
66 (25.9) |
| Average rainy days | 19.7 | 15.3 | 14.0 | 10.3 | 9.7 | 9.0 | 10.9 | 8.7 | 10.4 | 12.3 | 16.6 | 20.9 | 157.8 |
| Average snowy days | 7.1 | 6.8 | 1.4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.5 | 17.8 |
| Average relative humidity (%) | 69 | 68 | 66 | 67 | 72 | 78 | 81 | 77 | 73 | 69 | 68 | 69 | 71 |
| Mean monthly sunshine hours | 46.2 | 69.2 | 133.1 | 177.0 | 200.7 | 178.4 | 161.2 | 207.8 | 157.0 | 147.5 | 95.8 | 50.6 | 1,624.5 |
| Source 1: JMA[13] | |||||||||||||
| Source 2: JMA[14] | |||||||||||||
| Climate data for Cape Hajikizaki[a], 38°19.8′N 138°30.7′E / 38.3300°N 138.5117°E, 1991−2020 normals, extremes 1978−present | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 16.1 (61.0) |
22.4 (72.3) |
24.6 (76.3) |
28.0 (82.4) |
29.9 (85.8) |
30.0 (86.0) |
34.3 (93.7) |
35.0 (95.0) |
35.3 (95.5) |
29.7 (85.5) |
23.4 (74.1) |
18.7 (65.7) |
35.3 (95.5) |
| Mean daily maximum °C (°F) | 5.4 (41.7) |
5.8 (42.4) |
9.1 (48.4) |
14.2 (57.6) |
19.0 (66.2) |
22.4 (72.3) |
26.2 (79.2) |
28.2 (82.8) |
24.8 (76.6) |
19.5 (67.1) |
14.0 (57.2) |
8.5 (47.3) |
16.4 (61.6) |
| Daily mean °C (°F) | 3.1 (37.6) |
3.1 (37.6) |
5.7 (42.3) |
10.4 (50.7) |
15.1 (59.2) |
19.0 (66.2) |
23.1 (73.6) |
25.0 (77.0) |
21.8 (71.2) |
16.5 (61.7) |
11.0 (51.8) |
5.9 (42.6) |
13.3 (56.0) |
| Mean daily minimum °C (°F) | 0.7 (33.3) |
0.5 (32.9) |
2.5 (36.5) |
6.8 (44.2) |
11.4 (52.5) |
15.8 (60.4) |
20.5 (68.9) |
22.2 (72.0) |
18.9 (66.0) |
13.4 (56.1) |
7.9 (46.2) |
3.2 (37.8) |
10.3 (50.6) |
| Record low °C (°F) | −6.3 (20.7) |
−7.0 (19.4) |
−3.3 (26.1) |
−0.8 (30.6) |
2.1 (35.8) |
7.5 (45.5) |
12.3 (54.1) |
15.5 (59.9) |
9.5 (49.1) |
4.2 (39.6) |
−0.6 (30.9) |
−4.9 (23.2) |
−7.0 (19.4) |
| Average precipitation mm (inches) | 133.1 (5.24) |
94.3 (3.71) |
101.0 (3.98) |
104.1 (4.10) |
112.3 (4.42) |
127.2 (5.01) |
216.2 (8.51) |
154.0 (6.06) |
152.5 (6.00) |
161.1 (6.34) |
167.7 (6.60) |
180.9 (7.12) |
1,711.6 (67.39) |
| Average precipitation days (≥ 1.0 mm) | 20.3 | 16.2 | 14.6 | 11.3 | 10.4 | 10.0 | 11.7 | 9.6 | 11.6 | 13.7 | 16.6 | 21.6 | 167.6 |
| Mean monthly sunshine hours | 46.1 | 77.7 | 149.8 | 200.1 | 218.7 | 189.0 | 171.9 | 215.7 | 159.9 | 149.2 | 92.0 | 51.0 | 1,723.5 |
| Source: Japan Meteorological Agency[15][16] | |||||||||||||
| Climate data for Ryōtsu (1991−2020 normals, extremes 1978−present) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 14.2 (57.6) |
19.9 (67.8) |
20.5 (68.9) |
26.9 (80.4) |
29.0 (84.2) |
30.7 (87.3) |
37.7 (99.9) |
38.8 (101.8) |
38.2 (100.8) |
29.5 (85.1) |
23.9 (75.0) |
19.0 (66.2) |
38.8 (101.8) |
| Mean daily maximum °C (°F) | 5.8 (42.4) |
6.2 (43.2) |
9.5 (49.1) |
14.7 (58.5) |
19.7 (67.5) |
23.4 (74.1) |
27.4 (81.3) |
29.6 (85.3) |
26.2 (79.2) |
20.6 (69.1) |
14.6 (58.3) |
8.8 (47.8) |
17.2 (63.0) |
| Daily mean °C (°F) | 3.0 (37.4) |
3.1 (37.6) |
5.9 (42.6) |
10.8 (51.4) |
15.8 (60.4) |
20.0 (68.0) |
24.2 (75.6) |
26.1 (79.0) |
22.5 (72.5) |
16.8 (62.2) |
11.0 (51.8) |
5.7 (42.3) |
13.7 (56.7) |
| Mean daily minimum °C (°F) | 0.2 (32.4) |
0.0 (32.0) |
2.2 (36.0) |
6.9 (44.4) |
12.2 (54.0) |
17.0 (62.6) |
21.5 (70.7) |
23.0 (73.4) |
19.2 (66.6) |
13.1 (55.6) |
7.3 (45.1) |
2.5 (36.5) |
10.4 (50.8) |
| Record low °C (°F) | −6.9 (19.6) |
−7.1 (19.2) |
−4.5 (23.9) |
−1.0 (30.2) |
3.6 (38.5) |
10.4 (50.7) |
13.8 (56.8) |
16.4 (61.5) |
10.8 (51.4) |
3.7 (38.7) |
−0.8 (30.6) |
−4.6 (23.7) |
−7.1 (19.2) |
| Average precipitation mm (inches) | 164.3 (6.47) |
118.7 (4.67) |
109.1 (4.30) |
104.6 (4.12) |
107.3 (4.22) |
138.9 (5.47) |
233.2 (9.18) |
142.7 (5.62) |
136.7 (5.38) |
139.2 (5.48) |
155.2 (6.11) |
210.0 (8.27) |
1,758.5 (69.23) |
| Average precipitation days (≥ 1.0 mm) | 23.0 | 18.1 | 15.7 | 11.7 | 9.7 | 9.3 | 11.4 | 9.1 | 11.4 | 12.9 | 16.9 | 22.7 | 171.9 |
| Mean monthly sunshine hours | 52.9 | 79.1 | 140.7 | 190.9 | 216.5 | 185.1 | 177.9 | 219.5 | 159.9 | 150.9 | 99.3 | 56.9 | 1,735.7 |
| Source: Japan Meteorological Agency[17][18] | |||||||||||||
| Climate data for Hamo (1991−2020 normals, extremes 1978−present) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 15.2 (59.4) |
20.0 (68.0) |
21.6 (70.9) |
28.4 (83.1) |
30.6 (87.1) |
34.4 (93.9) |
37.6 (99.7) |
38.2 (100.8) |
36.2 (97.2) |
31.7 (89.1) |
24.1 (75.4) |
19.6 (67.3) |
38.2 (100.8) |
| Mean daily maximum °C (°F) | 6.0 (42.8) |
6.4 (43.5) |
9.8 (49.6) |
15.6 (60.1) |
21.0 (69.8) |
24.5 (76.1) |
28.0 (82.4) |
30.2 (86.4) |
26.4 (79.5) |
20.7 (69.3) |
14.8 (58.6) |
9.1 (48.4) |
17.7 (63.9) |
| Daily mean °C (°F) | 3.1 (37.6) |
3.0 (37.4) |
5.6 (42.1) |
10.6 (51.1) |
15.7 (60.3) |
19.9 (67.8) |
23.9 (75.0) |
25.6 (78.1) |
21.7 (71.1) |
16.0 (60.8) |
10.5 (50.9) |
5.7 (42.3) |
13.4 (56.2) |
| Mean daily minimum °C (°F) | 0.2 (32.4) |
−0.2 (31.6) |
1.4 (34.5) |
5.8 (42.4) |
11.0 (51.8) |
15.9 (60.6) |
20.6 (69.1) |
21.9 (71.4) |
18.0 (64.4) |
11.9 (53.4) |
6.6 (43.9) |
2.5 (36.5) |
9.6 (49.3) |
| Record low °C (°F) | −7.5 (18.5) |
−7.4 (18.7) |
−4.9 (23.2) |
−2.9 (26.8) |
2.2 (36.0) |
7.8 (46.0) |
12.2 (54.0) |
14.2 (57.6) |
9.1 (48.4) |
2.4 (36.3) |
0.2 (32.4) |
−3.9 (25.0) |
−7.5 (18.5) |
| Average precipitation mm (inches) | 164.0 (6.46) |
109.5 (4.31) |
107.2 (4.22) |
98.7 (3.89) |
98.0 (3.86) |
129.6 (5.10) |
210.9 (8.30) |
143.8 (5.66) |
142.7 (5.62) |
138.2 (5.44) |
173.0 (6.81) |
206.3 (8.12) |
1,721.7 (67.78) |
| Average precipitation days (≥ 1.0 mm) | 22.8 | 17.7 | 16.1 | 11.6 | 10.3 | 9.6 | 12.2 | 9.5 | 11.5 | 13.6 | 17.5 | 22.4 | 174.8 |
| Mean monthly sunshine hours | 56.8 | 80.6 | 143.3 | 185.4 | 205.4 | 172.8 | 164.1 | 202.8 | 148.7 | 146.5 | 103.7 | 57.8 | 1,667.8 |
| Source: Japan Meteorological Agency[19][20] | |||||||||||||
Flora and fauna
editBecause it is located at the junction of warm and cold currents, it is extremely rich in vegetation, making it an extremely rare vegetation area on the island where plants unique to both Hokkaido and Okinawa coexist. It is also blessed with a variety of marine products, such as dolphinfish, bonito, and bigfin squid that appear in warm currents, and yellowtail that appears in cold currents.
Due to the hundreds of thousands of years that have passed since it was isolated from Honshu island, endemic species such as the Sad hare, Sad mole, and Sad shrew can be seen [15]. Although they are now extinct, there was a population of wild boars that was genetically separated from the population of Honshu for hundreds of thousands of years [16]. The Japanese weasel is said to have been re-introduced after becoming locally extinct.
History
editSado Island was originally connected to Honshu, but it separated from Honshu around 16 million years ago due to changes in the topography due to tectonic deformation and volcanic activity, and around 2 million years ago, the ground began to collapse due to compressive kinetic energy in the ocean floor. It is thought that the area rose to its current shape, with the Osado Mountains and Kosado Hills sandwiching the Kuninaka Plain. Uplift continues to this day due to tectonic movements such as earthquakes.
With a long history, Sado Island has been inhabited by humans for 10,000 years. Thousands of ruins discovered in the Kanai area included stoneware and hunting equipment from the late Yayoi period. There are also records of Sado in the Kojiki and Nihongi. After the Taika Reform, the central government established the Sado Province on the island, and the local population began to emigrate to Sado Island. At the same time, Sado Island has also become the place where losers of political conflicts or dissidents were exiled. Emperor Juntoku, Nichiren and other people had been exiled to Sado. After the Kamakura period, the Honma clan was appointed as the Shugodai. After 1589 ( Tenshō 17), Uesugi Kagekatsu invaded Sado Island, after which Sado Island was dominated by the Uesugi clan.
In 1601, miners discovered veins of gold and silver in the Aikawa Tsuruko Ginzan, which became the Sado Mine. In 1603 (Keichō 8), Tokugawa Ieyasu classified Sado Island as a territory of the Bakufu immediately after his victory at the Battle of Sekigahara. Sado Mine developed into the largest goldmine in Japan. Its output reached 41 tons by the Bakumatsu period in the mid-19th century, and it played an important role in the financing of the Shogunate. After the middle of the Edo period, the quantity began to decrease, but output rose to the highest level ever, at 400 kg a year, thanks to the introduction of advanced excavation technology during the Meiji era in the late 19th century. Sado Gold Mine closed in 1989. In nearly 400 years of mining history, it produced 78 tons of gold and 2,300 tons of silver.
After the abolition of the han system, the Japanese government established Sado Prefecture on Sado Island, but later renamed it Aikawa Prefecture. In 1876, Aikawa Prefecture was incorporated into Niigata Prefecture. In 2004, ten cities, towns and villages on Sado Island were merged to form Sado City.
Forced labor
editSado Island was the site of forced labor during World War II, when around 1,500 Koreans were conscripted and forced to work in the mines on the island.[citation needed][21] The Japanese government, some Japanese scholars, and a minority of international scholars oppose this claim.[22][23] Koreans are even mentioned in an exhibit in one of the mines, but there is no implication that they were forced to work there.[24]
In 2022, this became the subject of a diplomatic conflict between South Korea and Japan. Japan had previously added Hashima Island, another island where forced labor occurred (which Japan denies), to the UNESCO World Heritage Site list.[24][25] However, the nomination was only approved because South Korea and Japan had reached a deal where Japan would acknowledge forced labor in its exhibits. Japan, under the guidance of Japanese politician Kōko Katō and Prime Minister Fumio Kishida, went back on its word and created a museum denying that forced labor occurred on Hashima. All other 21 nations of the UNESCO committee agreed that Japan had failed to reach its side of the agreement, but Japan ignored requests to correct the museum. It subsequently filed to have Sado Island added to the list as well, which sparked international and domestic criticism.[24][25][26][27][28][29] This request was initially denied due to concerns over how the island's history would be presented.[30] Japan refiled the request on 28 January 2023,[31] with the goal of being added to the list by 2024.[32][33]
Various sources expressed skepticism on whether the bid would be successful.[30][33][34] However, on 27 July 2024, the UNESCO committee unanimously decided to register the Sado Island Gold Mines as a cultural heritage site.[35][5] The bid gained the support of South Korea following bilateral negotiations between the two countries.[36] The Japanese government established an exhibit about the harsh working conditions, and promised to hold an annual memorial. Additionally, a representative for the Japanese government told the committee that Japan would make efforts to "comprehensively address the whole history of the Sado Island Gold Mines" in consultation with South Korea.[35][5] The listing has been described as an improvement in Japan-South Korea relations,[5] although it has been met with criticism in South Korea.[4] South Korean President Yoon Suk Yeol's friendlier position to Japan has been analyzed in the context of the approval.[37]
Population
editIn 1960, Sado Island had a population of 113,296. Due to the inconvenience of living on the outlying islands and lack of jobs, Sado Island has experienced a long-term population decline. In October 2017, the population of Sado Island was 55,212. The total fertility rate of Sado Island is about 1.9, which is much higher than the average of Japan and Niigata Prefecture. However, the continuous outflow of population results in the persistent decrease of population.[citation needed]
Culture
edit
.jpeg)
Since Sado Island is an important trading base on the Nishimawari naval route from the coast of the Japan Sea to Osaka, the culture is strongly influenced by West Japanese culture like Kinki and Hokuriku. Also, intellectuals and politicians exiled from Kyoto to Sado brought the traditional performance culture of Kyoto, thus the traditional art of Sado Island began to thrive. The Noh Master Zeami Motokiyo was exiled to Sado, resulting in the particular development of Noh culture in Sado. In the Edo period, there were more than 200 Noh stages. Sado still has more than 30 Noh stages, and the number of Noh stages per capita ranks first in Japan. There are also local performing arts such as ‘Ghost Taiko’[ambiguous] on Sado Island.
Sado is also home to the Kodō taiko drumming troupe.[38] Kodō are credited with popularizing modern taiko drumming both in Japan and worldwide. Kodō Village is based in the Ogi subdivision.
Transportation
editSee also
edit- Sado, Niigata (municipality)
References
edit- ^ a b 島面積２０傑 (PDF) (in Japanese). 国土地理院. Retrieved 8 July 2017. [permanent dead link]
- ^ 佐渡島の概況 (in Japanese). 新潟県. Retrieved 8 July 2017. [permanent dead link]
- ^ 金北山 (in Japanese). 山と渓谷社. Retrieved 8 July 2017.
- ^ a b Lee, Hyo-jin (29 July 2024). "Backlash erupts over Korea's concession on UNESCO listing of Japan's Sado mine". The Korea Times. Retrieved 29 July 2024.
- ^ a b c d "Japan's Sado gold mine gains UNESCO status after Tokyo pledges to exhibit dark WWII history". AP News. 27 July 2024. Retrieved 28 July 2024.
- ^ "Sado Island Gold Mines". whc.unesco.org. Retrieved 28 July 2024.
- ^ "Japan rejected S. Korea's call to include term 'forced' in Sado mine exhibits". The Korea Herald. 6 August 2024. Retrieved 7 August 2024.
- ^ 尖閣湾 (in Japanese). 佐渡観光協会. Retrieved 9 July 2017. [permanent dead link]
- ^ 大地山 (in Japanese). 山と溪谷社. Retrieved 9 July 2017.
- ^ 国府川水系河川整備計画 (PDF) (in Japanese). 新潟県. Retrieved 9 July 2017. [permanent dead link]
- ^ 加茂湖 (in Japanese). 佐渡観光協会. Retrieved 9 July 2017.
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Notes
editExternal links
edit- Sado Tourism Association (in English)
- Sado Geopark (in English)
- Sado Steam Ship (in English)