100 word story

Single word prompt - Exhausted
Night had fallen hours ago faster and earlier than expected, yet I pushed on.  My back had even given up around the same time darkness fell and instead of throbbing in pain it had gone blessedly numb.  The sound of the shovel and of dirt flying back became rhythmic, scrape, whomp over and over again.  Soon it would be done just a few more feet to go. Yet the thought of what came next made me almost wish the dirt would continue on forever.  This may be exhausting but at least I didn’t need to consider what I was doing.