As Kirby races to escape rifle-wielding Mexicans, he rushes into a valley that the Mexicans are afraid to enter. At first he doesn't know why, but then the rumble of a geyser deeper in the valley draws him in. There he finds a cavern in which to hide, but when he investigates the dark hole, he finds a way down to a strange world of monsters and beautiful women.
This is a classic science fiction story from the golden age.
Public Domain (P)2015 Felbrigg Napoleon Herriot