The oldest surviving speculative fiction poem is the "Tale of the Shipwrecked Sailor", written in "Hieratic" and ascribed a date around 2500 B.C.E. Other sources ascribe the earliest written poetry to the "Epic of Gilgamesh" written in "cuneiform"; however, it is most likely that "The Tale of the Shipwrecked Sailor" predates "Gilgamesh" by half a millennium. The oldest epic poetry besides the "Epic of Gilgamesh" are the Greek epics "Iliad" and "Odyssey" and the Indian Sanskrit epics "Ramayana" and "Mahabharata". Some scholars believe that either the "Mahabharata" or the Tibetan "Epic of King Gesar" is the longest example of epic poetry in history.