A black crust appears on the horizon ahead.

The blood had dried to a black crust, and he smelled the whiff of corruption.

At first I thought that his eyes were hidden by black crusts of blood.

Although only a few days old, the lava had a dark black crust and was deceptively similar to other, much colder flows.

He picked one up; a little piece of gray stone, covered in black crust.

When the fruit bodies are dried they can shrink to form a flattened black crust.

Its sides were a shiny black crust shot through with red cracks, hot but no longer dangerous.

The black crust opened and heat struck him back.

You can count on your steak's making it to the table with a thick, black crust and a tender, pink interior.

The plate was smoking and what should have been blue powder was now a black crust.