A version of Jules Verne's "Journey to the Center of the Earth" in which half the team die from incompetence, the survivors are very glum and there are no monsters. Also known as "Night Without Stars" and "Digging For Godot."
Snark aside, it has a certain bleak grandeur with its empty caves and bright but sterile Inner World. Jules Verne rewritten by Magnus Archive's Peter Lukas.