The Hildesheim loop, also known as the Sorsum curve or the Hildesheim curve, is a 3.7 km long German passenger railway. It is single-track and electrified throughout. The line was opened in 1991.
Wikipedia https://en.wikipedia.org/wiki/Hildesheim_loop
Address (Unnamed Road), 31180, Germany
Coordinates 52°9'34.181" N 9°52'34.796" E