KEY POINTS:
German archaeologists using radar technology believe they may have discovered the ancient horse racing track at Olympia.
The whereabouts of the racecourse is one of the last remaining mysteries of the holy site where the ancient Greeks founded the Olympic Games in the 8th century BC.
The 1km-long course, the largest structure of ancient Olympia, has been lost for more than 1600 years since the Christian Emperor Theodosius abolished the games because of their pagan past. The racecourse has remained hidden by several metres of silt on the floodplain of the Alfeios River.
