I haven't had that much experience with a #7, if thats all that's aviable it would be my guess it means rest, I would get me a snack and a bottle of water, then sit down in front of the #7 and let the sun / time create the shadows, watch for signs that will create a triangle with-in a 200 foot 1/2 circle in the shadows or a combination of symbols. Tough one to figure. # 7 = rest, it may be something on a near-by hill, mountain side and just need to play the waiting game, perhaps take a photo every hour, you may get lucky Good luck