At the Mountains of Madness is a science fiction-horror novel by American author H. P. Lovecraft.

In the most cold and remote region of the planet lies mountains towering higher than the Himalayas and containing abominable secrets the mind can scarcely fathom. When an intrepid expedition stumbles across the remains of an ancient race of creatures that predates humanity by millions of years, they believe they've discovered the scientific find of the century. Instead, they've unearthed a terror beyond all reckoning which may devour them both body and soul. Enter into the icy realms of one of H. P. Lovecraft's most seminal cornerstones of the Cthulhu mythos.... If you dare!

The story details the events of a disastrous expedition to Antarctica in September 1930, and what is found there by a group of explorers led by the narrator, Dr. William Dyer of Miskatonic University. Throughout the story, Dyer details a series of previously untold events in the hope of deterring another group of explorers who wish to return to the continent. These events include the discovery of an ancient civilization older than the human race, and realization of Earth's past told through various sculptures and murals.

Howard Phillips Lovecraft (1890–1937) was an American author of horror, fantasy, poetry and science fiction, especially the subgenre known as weird fiction. At the Mountains of Madness was first published in 1936. Audiobook read by Ben Tucker, running time 4 hours, 25 min. Unabridged full version. Also available as E-Book.