Het Onbekende (Dutch for: The Unknown) is a 2023 Dutch adventure television show presented by Renze Klamer. In show, two teams go on a competitive adventure in Slovenia.Contestants agree to take part with everything being unknown: they are not told anything about the show, the rules of the game or the date and time when the show would begin. One team consists of well-known Dutch people and the other team consists of unknown Dutch people. Pia Douwes, Ronald Mulder and Freek Bartels are among the well-known Dutch people taking part.The format of the show was sold to Belgium and France.