<P> The island is roughly 1,300 km (810 mi) long and ranges from 50 to 230 km (31 to 143 mi) wide, and its total area is 225,800 km (87,200 sq mi), 60% of the total area of Japan, making it slightly larger than Great Britain . Its land area has been increasing with land reclamation and coastal uplift in the north, but global sea level rise has diminished these effects . Honshu has 10,084 kilometres (6,266 mi) of coastline . </P> <P> Mountainous and volcanic, Honshu experiences frequent earthquakes (the Great Kantō earthquake heavily damaged Tokyo in September 1923, and the earthquake of March 2011 moved the northeastern part of the island by varying amounts of as much as 5.3 m (17 ft) while causing devastating tsunamis). The highest peak is the active volcano Mount Fuji at 3,776 m (12,388 ft), which makes Honshu the world's 7th highest island . There are many rivers, including the Shinano River, Japan's longest . The Japanese Alps run the length of Honshu, dividing the northwestern (Sea of Japan) shore from the southeastern (Pacific or Inland Sea) shore; the climate is generally humid subtropical in the southern and coastal parts of the island and humid continental in the northern and inland portions . </P> <P> The northernmost point on Honshu is the tip of the Shimokita Peninsula in Ōma, Aomori; Cape Kure lies at the southern extreme in Kushimoto, Wakayama . The island's eastern extremity is Todogasaki in Miyako, Iwate, and its western one is Bishanohana in Shimonoseki, Yamaguchi . Honshu spans more than eight degrees of latitude and 11 degrees of longitude . </P> <P> Honshu is connected to the islands of Hokkaido, Kyushu and Shikoku by tunnels and bridges . Three bridge systems have been built across the islands of the Inland Sea between Honshu and Shikoku (Akashi Kaikyō Bridge and the Ōnaruto Bridge; Shin - Onomichi Bridge, Innoshima Bridge, Ikuchi Bridge, Tatara Bridge, Ōmishima Bridge, Hakata--Ōshima Bridge, and the Kurushima - Kaikyō Bridge; Shimotsui - Seto Bridge, Hitsuishijima Bridge, Iwakurojima Bridge, Yoshima Bridge, Kita Bisan - Seto Bridge, and the Minami Bisan - Seto Bridge), the Seikan Tunnel connects Honshu with Hokkaido, and the Kanmonkyo Bridge and Kanmon Tunnel connects Honshu with Kyushu . </P>

Japanese prefecture located in westernmost tip of honshu