At The Mountains of Madness by H.P. Lovecraft
Had read lots of Lovecraft, but not this particular one. Scientific teams from Miskatonic University explore colossal mountains in Antarctica and discover the remains of an Archaean city and the bizarre creatures who built it. The thing that destroyed the ancient, sublimely intelligent race might still be there. Like most Lovecraft stories, Mountains is more picture painting than plot, the majority of pages narrative description of the city, its inhabitants, and history. The descriptive stuff is imaginative and well written, but very long and an effort to get through, reminding me of Moby Dick. However, it is a cool, disturbing picture that will stick with you, and Lovecraft smartly throttles down the details at the climax, letting the reader imagine the city’s final mystery.
Mountains uses all the classic Lovecraft references—The Necromomicon, Cthulu, Miskatonic U, etc., so I’d call it a feast for anyone who is already a Lovecraft fan. Anyone who is not already a Lovecraft fan might have a hard time reading it to the end.