As the lock hatch swung open, that one thought dominated him.

The hatch swung open, and Gordon poked his head out.

Just then the hatch on the opposite end of the section swung back.

Then they withdrew, and in the same silence the hatch swung closed.

But tiny hatches all over the curved wall were swinging open.

The thick hatch swung wide on a deep, dark hole.

Then she pressed the button, and the hatch slowly swung open.

A moment later, the hatch swung open, and a low illumination came on inside.

The hatch behind them swung closed, then air began to hiss into the room.

The hatch swung closed and she sealed it in darkness.