'' Under the Sign of the Black Mark '' is the third studio album by Swedish extreme metal band Bathory . It was recorded in September 1986 and released on 11 May 1987 through New Renaissance Records and Under One Flag . It was a key album in the development of the black metal genre , and greatly influenced the Norwegian black metal scene that emerged in the early 1990s
Norwegian black metal scene
Early Norwegian black metal scene
Under the Sign of the Black Mark