Merryl was staring straight ahead, as if to pierce the black tar.

Not the black tar that's been cooking down since this morning.

Until about 10 years ago, Oulu was best known as a former trading center for black tar.

He turned and motioned black tar who stood near to come forward.

I describe it looking like a pot of black, boiling tar.

Their footfalls on the fresh black tar seemed very loud.

That night the air in the basement room became so thick it was like inhaling the black tar they put on the road.

The road rolled straight in front of him, not black tar now but white snow, packed and treacherous.

These incisions are then filled with either black tar or white plaster.

Blood in the stool, or stools that look like black tar.