Radium Pool

Beneath the volcanic Manalava Plains lies a world never meant for human eyes, a gem-encrusted cavern housing a pool of shimmering, iridescent radium, guarded by alien entities from a distant planet. When a young woman vanishes into these forbidden depths, two men follow her shadowed trail into the earth's secret chambers, drawn deeper than any explorer has ventured before. But the cavern holds more than crystalline wonders: it contains fragments of a lost age, corridors of time itself, and a silent voice that warns of peril too great to ignore. As the Earthmen venture further, they discover the extraterrestrial guardians have claimed this underworld as their own, using superior technology to protect their plunder. What began as a rescue mission becomes a battle for ownership of ancient secrets, and a confrontation with beings who view humans as intruders in a kingdom older than civilization.