He allowed her, now, to lead the way. She moved forward about fifty feet, then waited for him to catch up, then did it again. She came to another intersection, but it was obvious which way to go, for light and air were unmistakably coming up the tunnel now. She began to proceed at an extremely deliberate pace, just barely staying ahead of Chet. There was no point in getting too far out in front of him, since she just had to wait for him to catch up, and going slowly gave her more time to look for booby traps. They came to what must be the main adit leading southward out of the mine and found a flatbed car that was still capable of rolling down the rails bolted into its floor. Zula, after inspecting it for piano wires and Claymore mines, insisted that Chet sit down on it. She got her hands on his shoulders and pushed him along down the rails for a surprisingly long time, the brightness ahead of them increasing every time they came to a bend in the tunnel, and finally came around a curve and were blinded by the almost direct light of the sun shining into the mine’s southern entrance. It seemed an obvious place to put a third booby trap, and they were too dazzled to see, so they waited there for a few minutes, eating snacks and letting Chet guzzle another bottle of water. Then Chet got to his feet, and they took the tunnel’s last hundred yards one cautious step at a time.