Complex sentence: Hinterkaifeck is the scene of an unsolved mass murder, which is one of the most mysterious crimes in German history, situated between the bavarian cities Ingolstadt and Schrobenhausen about 70 kilometres north of Munich.
Split into simpler sentences: Hinterkaifeck is the scene of an unsolved mass murder which is one of the most mysterious crimes in German history. It is situated between the bavarian cities Ingolstadt and Schrobenhausen about 70 kilometres north of Munich.