Mongolia

Mongolia was a country in Asia north of China. Part of the Gobi Desert was located in Mongolia. (AUDIO: Earthfall) Mongolia's capital was Ulan Bator. (COMIC: The Golden Ones)

History
In the Cretaceous period, Mongolia was populated by dinosaurs, such as tsintaosaurus, dsungaripterus, protoceratops, velociraptor, ankylosaurs, tyrannosaurs, bactrosaurs and Alioramus. The Seventh Doctor arrived in Mongolia during the Cretaceous period to pick up Ace, whom he had dropped off there. Along the way he encountered a pit of dholes and an alien slave who had escaped from a nearby construction site. Ace arrived with a herd of dinosaurs to trample the site, destroying it and freeing the slaves. (PROSE: Living in the Past)

Following the Planetary Relocation Incident, Martha Jones visited Mongolia. (AUDIO: Dissected)

In the 21st century, UNIT Lieutenant Sam Bishop and Petronella Osgood were deployed to the Gobi Desert in Mongolia in search of a Nestene energy unit. (AUDIO: Earthfall)

In the Unbound Universe, the Chinese government was conducting nuclear tests in Mongolia before the Handover of Hong Kong, a final test at midnight being an elaborate cover for the destruction of the psychic parasites who powered the now useless Keller Machines. The Unbound Doctor made use of the last detonation to dispose of the last of the alien parasite that the the Master was hoping to use to control the Ke Le Divisions, the bomb's shockwave breaking the inhibitor on his TARDIS. (AUDIO: Sympathy for the Devil)