faceless figures in white robes march in dark tunnel at night. mysterious, eerie procession under moonlit sky. many figures walk

figures cloaked marching procession night tunnel spooky eerie horror mystical gothic religious black and white fantasy illustration artwork drawing spirit soul people mantle robe cape halloween dead evil crowd multitude character design engraving etching cartoon woodcut unreal surreal spirituality ghost scary creepy dark monks pilgrims shadowy moonlit moon