framed glass case with a dark, viscous substance inside, possibly oil or tar, illuminated from within

framed glass case with a dark, viscous substance inside, possibly oil or tar, illuminated from within. There are specks and deposits on the glass. The frame is part of a larger structure, likely an exhibit or display. Above the case is a metallic fixture with ornamental details. The location is presumed to be Новая Чернушка, Russia, but this cannot be confirmed from the image alone. No people or specific actions are visible. The environment is dark and indistinct.