Astounding Stories, March, 1931

A sudden tremor rattles a remote desert ranch, tossing Garry Connell from his bunk into a night of shaking timber and rolling earth. As the Sentinel mountain looms, a deep, resonant roar rises from its flank, and a scar of dust and stone marks a massive slide that seems to have torn the ancient peak open. Determined to uncover the source of the disturbance, Connell packs provisions and a pistol, setting out for a perilous ascent that promises both danger and the uncanny clash of ancient forces with modern resolve.

The issue also offers a medley of speculative wonders. One story follows an intrepid aviator racing toward a mysterious Jarmuthian ziggurat, while another pits invisible robots against a gangster’s schemes. A fleeting glimpse into the fourth dimension sends a daring rescue mission spiraling through time, and a compact adventure explores the astonishing power of a golden atom. Together, these tales deliver classic pulp excitement, vivid imagination, and the promise of daring exploits that keep listeners on the edge of every chapter.