The Discovery

The metal detector was doing its job. Luka and Rene were excited to see how the detector was getting louder with each step. They reached that spot where the detector was shouting, “here it is.” Rene started the digging and Luka was helping him in this excavation. Rene with a shovel in his hands was digging the spot and with a thud sound, he stopped for a moment. But why did he stop?