In order to reveal this mystery, John needed tools. His excitement was already heightened. She he went down to hardware store and bought himself necessary tools along with a metal detector. Yes I know what you thinking. Metal detectors are not 100% accurate every time. But was this fact going to stop him from digging up? No.
He used metal detector and found two potential places to dig. He marked the spot with X. Now he was all set for digging a hole.