Myros

From Tardis Wiki, the free Doctor Who reference

Myros was a planet with rolling green hills and rivers of fire. The presence of bridges and castle-like buildings indicated that the planet had an advanced society at one point, although none of these individuals were present when the Twelfth Doctor and Clara Oswald visited in 3016. Instead, they encountered two robots who served Lord Zorgo. (COMIC: Zorgo the Terrible)