Pereislav
From Tardis Wiki, the free Doctor Who reference
Pereislav was a city in Europe located south-west of Moscow. The city was shown on Yevhen's map of 13th century Russia. In or before 1240, the city was conquered and destroyed by the Mongol Empire during their invasion of Russia. (PROSE: Bunker Soldiers)
Behind the scenes
In the modern day real world, Chernigov (spelled Chernihiv) is located in northern Ukraine. During the Mongol invasion depicted in Bunker Soldiers, the city was the capital of the Principality of Pereyaslavl.
