The monument was built in 1910 by Bennett H. Young, who during the war rode with Confederate general John Hunt Morgan. Young was drawn to the area due to hearing about the nearby Zollie Tree, where a local woman decorated it each Memorial Day in honor of general Felix K. Zollicoffer, who died at the Battle of Mill Springs. The monument uses the name "Battle of Fishing Creek", as the battle was known by Southerners in 1910. The rectangular slab of limestone is 4 feet (1.2 m) by 3 feet (0.91 m), and rest on a 1 foot (0.30 m) high slab of concrete.
The Zollie Tree, for which both the Confederate Mass Grave Monument and the nearby General Felix K. Zollicoffer Monument was constructed, was destroyed by lightning in 1995, although a sapling from it was later planted at the same spot. Both are now in what is called Zollicoffer Park, part of the larger Mill Springs Battlefield.