This is The 1937 Kopytnye Containment Operation North of Franz Josef Land by Sascha Schmidt, a mythical creature horror story drawn from the classified reports of a hidden biological threat. In the polar night of 1937, the Soviet prison ship Mikhail Lomonosov is ice-locked north of Franz Josef Land when the crew discovers that an ancient Pomor legend is not folklore but a para-natural predator. The kopytnye—hooved riders that travel the Arctic storm corridors—manifest as infrasound at 17.5 Hz, causing cardiac arrest and broken necks in anyone sleeping above the waterline. The ship’s clerk, a former radio engineer, begins a private chronology of the impossible, noting the sound of hooves striking the steel superstructure six hundred kilometers from the nearest land.

Recovered field notes and a pre-revolutionary naval chart marked SALUS OMNIU ...