The Muk-Muk Valley is a small but fertile valley in the south central Siccus Badlands. It is named after the Muk River which runs through it. The valley is bordered by the Dune Sea to the north, the Akhenaten Swamps to the east, the Mystic Mountains to the south, and The Slot to the west. The well-watered valley is well known as the producer of most of the red wine in Historica. It has a Mediterranean climate. The valley contains Muktifra Bay and the city of Messahmuk.