Japan is an archipelago, or string of islands, on the eastern edge of Asia. There are four main islands: Hokkaido, Honshu, Shikoku, and Kyushu. There are also nearly 4,000 smaller islands! Japan's nearest mainland neighbors are the Siberian region of Russia in the north and Korea and China farther south.
Almost four-fifths of Japan is covered with mountains. The Japanese Alps run down the center of the largest island, Honshu. The highest peak is Mount Fuji, a cone-shaped volcano considered sacred by many Japanese.
Japan can be a dangerous place. Three of the tectonic plates that form Earth's crust meet nearby and often move against each other, causing earthquakes. More than a thousand earthquakes hit Japan every year. Japan also has about 200 volcanoes, 60 of which are active.