At the Mountains of Madness is a novella by horror writer H. P. Lovecraft. On an expedition to Antarctica, Professor William Dyer and his colleagues discover the remains of ancient half-vegetable, half-animal life-forms. The extremely early date in the geological strata is surprising because of the highly-evolved features found in these previously unkown life-forms. Through a series of dark revelations, violent episodes, and misunderstandings, the group learns of Earth's secret history and legacy.The story is written in first-person perspective by the geologist William Dyer, a professor at Miskatonic University. He writes to disclose hitherto unknown and closely kept secrets in the hope that he can deter a planned and much publicized scientific expedition to Antarctica. Theodore Sturgeon described the novella as "perfect Lovecraft" and "a good deal more lucid than much of the master's work," as well as "first-water, true-blue science fiction." The story has also popularized the concept of ancient astronauts.