Strepto

Strepto was the home planet of the Water Hags. Its landscape was mainly comprised of a marsh-like, boggy terrain. It was apparently lost by the Water Hags, who claimed it vanished into thin air. (TWN: Something in the Water)


 * This may suggest Strepto was one of the Stolen Planets. If so then the doctor and his companions would have saved it. (DW: The Stolen Earth/Journey's End)