THIS WAS INVISIBLE TO THE ALLYS (TO T ALLY)
DOES ONLY LANGLEY KNOW ABOUT THIS EXACT LOCATION.
THEY KNOW INFORMATION WAS GATHERED AND TRANSMITTEd TO AN uNKNOWN uNDERGRUUND LOCATION SOMEWHERE OUT THERE
POSSIBLE IT WAS THE LAST MESSAGE
THIS WAS HOW THEY KNOW THAT ITS BURIED.
SHOULD USE THE EARTHS MAGNETIC FIELD