Wikipedia
Südschleife
The Nürburgring Südschleife (south loop) was a German motor racing circuit which was built at the same time as the world-famous Nürburgring Nordschleife (north loop). These two layouts were joined together by the Start und Ziel (start/finish) area and could therefore be driven as one track that was over long.
Opened in 1927, the Südschleife was rarely used after the Nordschleife was rebuilt and updated in 1970 and 1971 and was finally destroyed by the building of the current Nürburgring Grand Prix circuit in the early 1980s. Today only small sections of the original track remain.