22. Click the "Go Back" button and climb back up through the crypt, and return to the globe. Remove the book from your backpack, and navigate the globe to the coordinates you find in the book.
23. The globe will dissolve, and a truck will drive you to Oil Creek in Titusville, PA. After Laird's speech, click on the cell phone.
24. You will see a truck parked in front of a flatbed rail car carrying barrels of oil. Both are in front of a shed, or cabin.
25. Open your backpack and click on the chain you found in the crypt. When the chain appears on screen, click on it again.
26. The chain should then hitch itself to the back of the truck and haul the flatbed rail car forward, revealing the door to the shed.
NOTE: This has also sometimes been a hitch in the game. Some gamers (again, me included) have had the chain fail to respond, and had to restart the challenge from the very beginning.
27. Click on the door of the shed to open it, then click on the opened door to enter the shed.
28. Click on the drawer of the desk against the far wall. The drawer will slide open, and reveal the artifact.
29. The cell phone will appear and Laird will congratulate you. Remember to click on the cell phone to close it, then click on the artifact and place it in your backpack.
30. Return to the game room, place your puzzle piece appropriatelly, and submit your guess of the week for the treasure location.