Beyond the Labyrinth

Normie, a Vietnam veteran, is now an itinerant drunk who makes his home in a hidden cave. When exploring his new home he discovers a labyrinth of caves and makes a grizzly discovery of human remains.
As he explores deeper into the caves he makes another startling discovery: a hidden world inside the labyrinth, in which human beings exist, completely cut off from the rest of the world.
Normie is able to connect the discovery of the human remains with the inhabitants of the hidden world, with some frightening and devastating consequences.