At the Mountains of Madness by 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! - Summary by Ben Tucker