The small vehicle's curved door was opening and closing now.

A curved inner door (now removed) rolled sideways at the cylinder.

And she headed back to the secretaries' room, closing the curved door behind her.

It consisted of a cylindrical box with a curved door in the front.

Its exit is a massive curved door in the wall of the Map, hidden by the waterfall.

The transparent lift came to a stop, and a curved door rotated open.

Its curved door was blocked open by a chunk of granite.

It was a curved door set in the dead end of the pipe through which he had walked.

The hinges of the curved door worked smoothly, too.

A curved door is best visualized as one section of a large cylinder.