H.P. Lovecraft's At the Mountains of Madness #2

Plot

Dyer and Danforth from the Miskatonic University research team take their small plane through the unknown Antarctic mountain range—and land to explore the vast, cyclopean alien city that lies beyond it. Here at last they will discover the hideous secret of all life on Earth . . . but can they escape these uttermost vaults at the bottom of the world, and keep sanity enough to warn mankind?