Tungna, Nepali Dragon guitar! Vintage! The Tungana or Tunga (Nepali: टुङ्ना) is a plucked string instrument from Nepal. It is made from a single piece of carved wood. The front hollow body (which serves as the sound-box) is covered with stretched animal skin on which the 'bridge' sits.Tungna has four strings which is anchored to the keys and body at both ends and the 'bridge' acts as a cantilever thus maintaining the tension of the strings.