Although there is very little concrete historical evidence that has been found so far for the period prior to 600 BCE, the history of the Tamil people probably predates this period. Various legends became prevalent after the 5th century BCE regarding the antiquity of the Tamil people. According to "Iraiyanar Agapporul", a 3rd/5th century CE annotation on the Sangam literature, the Tamil country extended southwards beyond the natural boundaries of the Indian peninsula comprising of 49 ancient "nadus" (divisions). The land was supposed to have been destroyed by a deluge. The Sangam legends also added to the antiquity of the Tamil people by claiming tens of thousands of years of continuous literary activity during three "Sangams". However, there have been no direct archaeological finds supporting these legends.