The cave narrowed to a tunnel at its end, and Linden began to hurry.

Inside, the cave narrowed into a short tunnel bearing right.

The cave narrowed where piles of debris had fallen from the roof.

The cave narrowed, and Schroeder saw a narrow fissure ahead.

The cave narrowed into a tunnel soon after, running level and branching in two or three places.

Now Ben became aware that the cave was narrowing in around them as they progressed.

At the rear, the cave narrowed and there was another hide curtain.

Here, where the cave narrowed, I could thrust him behind me if need be.

The cave narrowed, winding down to who knew where.

Down towards the far end the cave narrowed sharply.