Yonaguni is the westernmost inhabited island of Japan, located near Taiwan. It has an area of 28.88 km2 and a population of around 1700 people. While some believe underwater rock formations off Yonaguni called the Yonaguni Monument were artificially built thousands of years ago, most academics consider them to be a natural geological structure formed solely by natural processes over time.

1. „YONAGUN
I”
GROUP 6
PIOTR MARCZYK (POLAND)
DAMIAN STYPA (POLAND)
KONRAD SZOTA (POLAND)
DANIEL JIMENO GREGORIO (SPAIN)
NAOMI GUTIÉRREZ FRÍAS (SPAIN)
RAQUEL RIVERO DORTA (SPAIN)
VIKTOR (GERMANY)

2. YONAGUNI
 Yonaguni is one of the Yaeyama Islands. It is the westernmost
inhabited island of Japan and lies 108 kilometers (67 mi) from the
east coast of Taiwan, between the East China Sea and the Pacific
Ocean proper. Japan intends to station 100 troops on Yonaguni to
counter the buildup of Chinese forces in the area

3. GEOGRAPHY
 The island has an area of 28.88 km2 , a population around 1700,
an annual mean air temperature of 23.9 °C, and annual
precipitation of 3000 mm. All islands are under jurisdiction of the
town of Yonaguni, Yaeyama Gun, Okinawa and there are three
towns: Sonai, Kubura and Higawa. It was incorporated under the
control of the Ryūkyū royal court in 1610.
Yonaguni, more specifically Cape Irizaki 24°26′58″N 122°56′01″E at
the western tip of the island, is the westernmost point of Japan.
Taiwan is said to be visible from Irizaki on a clear day

4. HISTORY
 During the last ice age, Yonaguni was part of the continent. In
the 12th century, it was incorporated to the Ryūkyū Kingdom. In
the 17th century, it was incorporated into the Japanese han of
Satsuma. By 1879, the island was formally incorporated into
Japan. Until the early 20th century, Yonaguni was part of the
larger Yaeyama village, which included the neighboring Yaeyama
Islands. In 1948, it became an independent village. From 1945 to
1972, it was occupied by the United States and was then returned
to Japan to form a part of Okinawa Prefecture. On May 4, 1998, a
part of the island was destroyed by a submarine earthquake.

5. YONAGUNI MONUMENT
 In the 1980s, local divers discovered a striking
underwater rock formation off the southernmost
point of the island. This so-called Yonaguni
Monument has staircase-like terraces with flat
sides and sharp corners. Although the majority of
the academic society regard the rock formation as
natural joint, Masaaki Kimura, a professor of
seismology in University of the Ryukyus and
some media believe it is an artificial (or
artificially modified) structure engraved or built
2,000 to 3,000 years ago.

6.  Patrick D. Nunn, Professor of Oceanic Geoscience
at the University of the South Pacific, has
studied these structures extensively and notes
that the structures below the water are stated
that they "have been fashioned solely by natural
processes" and that "there seems no reason to
suppose that they are artificial”

7. PHOTOS

9. Thank you for
watching my
presentation