A thing by now lost in the bowels of the Earth.

It was cold here, in the bowels of the house.

And yet how could there be running water in the bowels of the earth?

He had no time to watch what was going on in the bowels of the plant.

Deep in the bowels of the company, one person was working completely on their own.

Would they find the answer down there, he thought, deep in the bowels of the ship?

He found his opportunity in the very bowels of the ship.

But we were deep in the bowels of the rock beneath its base.

They spent the next two hours in the bowels of the mine, and then had lunch.

There could have been nothing in our bowels until within a day or two past.