The River of Whirling Waters was a river on the planet Skaro. After a great explosion destroyed the continent of Darren and killed most Thals living there, the surviving Thals spent several years travelling to the continent of Davius. After crossing through the Islands of Moving Mountains, they journeyed almost to the River of Whirling Waters, where they settled and lived as farmers for many generations. (PROSE: The Secret Lives of Monsters)
Behind the scenes
The River of Whirling Waters originated in a map of Skaro included in The Dalek Book by Terry Nation and David Whitaker. Published in 1964, it was the first published collection of original stories from the Doctor Who universe.