Derankoiyo Turkish "the devil City "

                                              The city of the devil:


 - Is one of the strangest cities that were discovered in the modern era underground.
 Were discovered in 1963 by accident during renovations to a home, and is rumored that one of the region's population has demolished one of the walls of his home, built in caves, and found behind the wall room obscure had not seen before, and its leaders in this room to another room and into another room , until it was discovered Derankoiyo city.

   the City Derankoiyo underground opened for tourists in 1969, after 6 years of its discovery. 

 The locals called it the city of to its existence under underground. some scientists see that humans can not be them in antiquity and primitive means of building a city like Derankoiyo , so I suppose that some of them built by entities Derankoiyo superhero and especially intelligent people believe that to possess supernatural powers.