In the center of Stonehenge was a little red flag planted in the ground. It was clearly visible, even from the outer circle of stones. Carved into the rock by the flag were the words:
FACE THE CHALLENGE AND RECEIVE THE RIDDLE
Each team that arrived at the flag would have to overcome a challenge. Those that successfully completed it would be given the clue to the location of the next checkpoint.
In the ground was a sword, its point buried in the dirt. A shield was propped up against it. These would be there for each arriving team, whether or not the previous team had returned them after using them. Only ONE team member could pick these items up, regardless of what the other(s) attempted.