The passage turned as they climbed in a long, shallow spiral.

The passage turned, opened into an outside hall, so that it wasn't necessary to go in and out through the office.

The passage twisted and turned, more like the burrow of a giant rabbit than anything else.

In twenty feet, the passage had turned enough times that, with their flashlights off, it was pitch dark.

The passage turned to the right at a right angle.

The passage turned at a right angle behind which appeared to be a larger room.

The passage turned to the right a little and again was blocked by fallen rubble.

The passage turned abruptly to the left, and he followed it.

The door was still part way open, and the street light revealed the way until the passage turned to the right.

Again the passage turned abruptly, this time to the left, and ten more stairs led upward.