No, not our black sea. The black sea in the world of black. The Black world in the story is of another planet, with only heat from a star and the heat of the warmers. But that is not important. The only important part is the city of the black sea. The black sea is a huge sea, composed of fossil fuels. The city rests on a landmark now called "Plateau Hollow" As miners drilled into its core, to drill into the ocean. Levels upon levels of Drilling stations sit there, and no emergency leak has been reported.
Until now.
(On a sidenote, the city is industrial. Factories everywhere, everything is black on this planet. Not gothic black, just because it sounded cool to me. The star emits heat, but not light. Clothes can be multicolored, but the color of buildings are black. and houses are scarce, so people usually live in a hostel.Another sidenote, you have to be an 8-19 year old, unless I approve of you being a drill worker)