The passage widened further one last time before ending abruptly in a wall twenty feet ahead.

The Shadow reached a final turn; the passage widened to form a small square room.

After several minutes, the passage leveled off and widened.

A few yards on, the passage widened into what had obviously been a junction of four passages.

Then the passage suddenly widened, like the large end of a square funnel.

Then abruptly the passage widened and the light ahead grew stronger.

Where the passage widened into a tiny court, Allard tried a door in the wall on the left.

The small passage widened into a larger tunnel and they were able to get to their feet.

Beyond the hole the passage widened into a comfortable tunnel.

The passages widened until they covered the area of a good-sized street.