Geography
The Liancourt Rocks consist of two main islets and numerous surrounding rocks. The two main islets, called Seodo (서도/西島, "Western Island") and Dongdo (동도/東島, "Eastern Island") in Korean, and Otokojima (おとこじま/男島, "Male Island") and Onnajima (おんなじま/女島, "Female Island") in Japanese, are 151 metres (495 ft) apart. The Western Island is the larger of the two, with a wider base and higher peak, while the Eastern Island offers more usable surface area.
Altogether, there are about 90 islets and reefs, volcanic rocks formed in the Cenozoic era, more specifically 4.6 to 2.0 million years ago. A total of 37 of these islets are recognized as permanent land.
The total area of the islets is about 187,450 square metres (46.32 acres), with their highest point at 169 metres (554 ft) on the West Islet. The western islet is about 88,640 square metres (21.90 acres); the eastern islet is about 73,300 square metres (18.1 acres).
The western islet consists of a single peak and features many caves along the coastline. The cliffs of the eastern islet are about 10 to 20 metres (33 to 66 ft) high. There are two large caves giving access to the sea, as well as a crater.
In 2006, a geologist reported that the islets formed 4.5 million years ago and are quickly eroding.
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