Honshu the economy along the northwestern Sea of Japan coast is largely based on fishing and agriculture. The island is linked to the other three major Japanese islands by a number of bridges and tunnels. Its climate is humid and mild. The island is roughly long and ranges from wide, and its total area is , 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 of coastline. Mountainous and volcanic,
Adolf S. Jensen Land are unnamed. Vivian Fjeld is a high mountain in the northern subpeninsula, Kapspidsen is a high mountain near the NE end. Adolf S. Jensen Land Adolf S. Jensen Land () is a peninsula in the southern limit of King Frederick VIII Land, northeastern Greenland. Administratively it belongs to the NE Greenland National Park area. The landmass north of Bessel Fjord was deemed to be an island by the Second German North Polar Expedition led by Carl Koldewey that partially explored the area in 1869–70. Koldewey used the name 'Peschel Island' in the English edition of his 1869–70 narrative. The area