Otagakure

Otogakure (音隠れの里) was founded by Orochimaru as a part of the Land of Sound, and is run by him. Not much is known about it: what is certain is that it actually consists of a series of lairs, located both within the Sound country and away from it, which Orochimaru switches between every week. Other than that, and the fact that its ninja specialize in techniques involving manipulation of sound waves, as well as using a cursed seal to increase their power, little else is known about it. Although he is the leading ninja of Otogakure, Orochimaru isn't a Kage, despite his equivalent power level. The reason for this is because the five Kages of the five great Hidden Villages don't acknowledge Otogakure, and certainly would not acknowledge a criminal like Orochimaru.