The abysmal invaders

"The Abysmal Invaders" by Edmond Hamilton is a thrilling science fiction tale about a small American town under siege by colossal prehistoric monsters and their reptilian riders, who surface from a hidden underworld with the intent to dominate humankind. When Dr. Walter Morton mysteriously vanishes while exploring a remote swamp, his assistant, Edward Rowan, begins a desperate search that suddenly plunges him into a nightmare as dinosaurs storm the town of Brinton, commanded by cold-blooded, lizard-like beings from deep below. Rowan discovers that Morton has been captured and learns that the invaders want to enslave humankind and the surface world at peril. Together, Morton and Rowan concoct a daring scheme to turn the planet's volcanic heart against the invaders, leading to a final confrontation to stop humanity's annihilation. The novel blends elements of adventure and terror to produce a narrative about the potential dangers of ancient forces erupting in an unsuspecting modern world.