Nürburgring Langstrecken-Serie
The Nürburgring Langstrecken-Serie (NLS) is an organisation of motorsport clubs of which each hosts one event of a nine-race (eight in 2024) series held on the Nürburgring Nordschleife. Participants of NLS races range from amateurs in small road legal cars with rollcages and harnesses to professional factory teams racing Group GT3 cars.
Source: Wikipedia — Nürburgring Langstrecken-Serie (CC BY-SA 4.0)