Nürburgring Nordschleife - An Enthusiast's Bend Guide: The Green Hell 832 km circuit. For 50 years, 'Ring fever continued to grew, and the Nordschleife (the northern loop) would become the most famous Grand Prix circuit in history.).Turn-by-turn guide to Jackie Stewart's infamous Grüne Hölle (Green Hell) - der Nürburgring Nordschleife, including f