Barnes, Colin - Dead Five’s Pass
When a new cave, hitherto undiscovered, opens up, cavers scramble to see who can explore first.
No one wonders, how did his opening suddenly appear?
Nor does anyone consider whether it is uninhabited.
Brisk novella has strong pulpy roots, and borrows heavily from HPL.
Two characters are granted superficial development. All others are dinner specials … meals.