This continent derives its name from the Jambu-tree (also called Naga) which grows there, its trunk fifteen yojanas in girth, its outspreading branches fifty yojanas in length, its shade one hundred yojanas in extent and its height one hundred yojanas (Vin.i.30; SNA.ii.443; Vsm.i.205f; Sp.i.119, etc.) On account of this tree, Jambudīpa is also known as Jambusanda (SN.vs.552; SNA.i.121). The continent is ten thousand yojanas in extent; of these ten thousand, four thousand are covered by the ocean, three thousand by the Himālaya mountains, while three thousand are inhabited by men (SNA.ii.437; UdA.300).