ATHENS (Reuters) - German archaeologists using radar technology believe they may have discovered the ancient horse racing track at Olympia where Roman Emperor Nero bribed his way to Olympic laurels.

The whereabouts of the racecourse is one of the last remaining mysteries of Olympia, the holy site where the ancient Greeks founded the Olympic Games in the eighth century BC.

The one-kilometer-long course, the largest structure of ancient Olympia, has been lost for more than 1,600-years since the Christian Emperor Theodosius abolished the games because of their pagan past.

"By means of geomagnetic investigation ... the first clear indications of the localization of the Hippodrome were found," said a statement sent to Reuters by Norbert Muller of the Johannes Gutenburg University Mainz, which helped fund the search.

German archaeological teams have been continuously excavating at Olympia since 1875 but the racehorse has remained hidden by several meters of silt on the floodplain of the Alfeios river.

In the second century AD, the travel writer Pausanias described the location of the track to the east of the Olympic sanctuary, detailing its unusual starting mechanism and the dangers for charioteers who were often injured at its sharp turn.