Shannow smiled his thanks and opened the oval door he had not noticed beyond the table.

Beyond this, four short steps led down to an oval door let into a solid steel bulkhead.

They came to a landing, or rather a platform from which opened three oval doors, all closed.

A skewed oval door was set in the surface of the ground.

At the far end were shelves and another oval airtight door.

The oval door to the outside world stood open, as it always did in good weather.

He drew smaller rings at one end and outlined a long oval door.

He opened the oval door and stood aside while the two men helped me through.

He moved up to the lifesystem and through the oval door.

All the oval doors of the houses glow bright orange.