Jainism is a religion founded in ancient India. Jains trace their history through twenty-four tirthankara and revere Rishabhanatha as the first tirthankara (in the present time-cycle). Some artifacts found in the Indus Valley civilization have been suggested as a link to ancient Jain culture, but very little is known about the Indus Valley iconography and script. The last two tirthankara, the 23rd tirthankara Parshvanatha (c. 8th–7th century BCE) and the 24th tirthankara Mahavira (c. 599 – c. 527 BCE) are considered historical figures. Mahavira was a contemporary of the Buddha. According to Jain texts, the 22nd Tirthankara Neminatha lived about 85,000 years ago and was the cousin of Krishna. Jains consider their religion eternal.