The right direction
This guy had called the police a few months ago when he heard this thunderous roar. He was told to keep an eye out for it and holler loudly if he heard it again. The kicker is that there were no more roars following the first. There was not a sound.
He didn’t know much. It was just a guess as to where the roar could have come from. You’re trying to solve a complex puzzle with just a few pieces.