Majuli

Mājuli or Majoli (, is an island in the Brahmaputra River, Assam, India. 
The island had a total area of at the beginning of the 20th century. Much land was eroded, so it had an area of only in 2014. Majuli has shrunk as the river surrounding it has grown. However, it is recognised by Guinness Book of World Records as the World's Largest River Island.