This should not be there
Mark was meticulous in his preparations. He thoroughly reviewed the documentation of the property before he began digging. According to the records, all plumbing and electrical conduits should be at least half a meters deeper than where Mark was digging.
He had also chosen this spot to build the pool because according to the plans, there were no utilities running beneath the land. The metallic clang made even more sense after all these considerations. Mark was now faced with a pressing question: what had he stumbled across if it wasn’t pipes or conduits?