Wrestling represents one of the oldest forms of combat. The origins of wrestling go back 15,000 years through cave drawings in France. Babylonian and Egyptian reliefs show wrestlers using most of the holds known in the present-day sport. Literary references to it occur as early as in the ancient Indian Vedas. The Iliad contains references, in which Homer recounts the Trojan War of the 13th or 12th century BC. Indian epics Ramayana and Mahabharata contain references to martial arts including wrestling. In ancient Greece wrestling occupied a prominent place in legend and literature; wrestling competition, brutal in many aspects, served as the focal sport of the ancient Olympic Games. The ancient Romans borrowed heavily from Greek wrestling, but eliminated much of its brutality.