Continue the following story:
Underground coal mines were horrible places. The darkness was a stress factor but the true danger were the coal worms which lived below. The goverments told stories about explosions to cover up the truth behind the missing groups of miners.
John found himself deep in the mine, his light source was a small lantern he had managed to hold onto. He could hear the sound of machinery and the distant rumbleof voices echoing through the tunnels around him. Suddenly he heard a noise that seemed out of place coming from one of the side tunnels, it sounded like a muffled scream.
Filled with fear John quickly made his way towards the source of the sounds, as he rounded the corner he came face-to-face with something he wasn't prepared for. There, crumpled on the ground was a man wearing nothing more than a thin undershirt and boxers, blood streaming down his face.
"Who are you?!" John demanded, trying to keep his voice calm. "What happened?" 
The man didn't respond, only stared at John with wide eyes filled with terror. John slowly approached the prone figure and looked closer; what he saw made his blood run cold.
The body was covered in hundreds of tiny black bugs, they were crawling all over it, feeding off its wounds.
John backed away, feeling sickened by the scene before him. As he turned to leave he caught sight of something moving among the insects, a shadowy form that glided across the walls. It was gone in an instant, but John knew what he had seen. A Coal Worm.