Enter the tunnel and go clear down to the steps on the right. Go up the steps and turn right. Go forward once and turn left into a dark cavernous area. Use the bicycle lamp when the gear symbol appears. In this screen, click left and then click on the forward arrow to go deeper inside. You'll see a pile of red chairs. Click screen right again, twice. See that you can now go forward again. Then click on the right side of this screen. Against the back wall here, pick up a POKER. Turn around and exit the dark room.

Leave the tunnel area. From opening the tunnel gate, go forward three times. Click right and go back up the hill to the bouders. Go right from the boulders and forward through the fence. Go forward once and turn right. Go down behind the bunker and enter underneath to the puzzle door. Using the top part from the blue circuit box in the tunnel: - move all rods to the up position. - click the lower left red rod to the down position - click the upper right brown rod to the down position. Note: You will see no change indicating that you have successful solved the puzzle, but something has happened back in the tunnel. Go back to the second cavern (nearest the tunnel entry). Use your bicycle lamp and open the door in the middle of the screen. Scan the area and click right once to the open doorway. Go forward. Turn right to see the bed frame. Click right twice to see that the circuit box is now open. Click on the box and pick up the FILE.