At the Mountains of Madness Vol 1

Arkham, 1933.

Professor Dyer, a prominent geologist, learns that a scientific expedition will soon leave for Antarctica following in the footsteps of the journey which he himself had made in 1931.

In the hope of dissuading the attempt, Dyer decides to make a full account of the tragic events he had survived, this time without omitting the passages which he had kept silent about on his return, for fear of being taken for a madman.