Who narrates Lovecraft's 'At the Mountains of Madness'?

Who narrates Lovecraft’s “At the Mountains of Madness”? William Dyer narrates the novella in the first person. He is a geologist and professor at Miskatonic University who recounts a disastrous Antarctic expedition.

Dyer’s account is framed as a warning. He writes to discourage a planned new expedition from returning to the region, explaining what he and other researchers discovered in 1930: ancient ruins, an extraterrestrial civilization, and evidence that radically changes the known history of life on Earth.

Dyer is sometimes confused with other Lovecraft protagonists or figures. Walter Gilman belongs to “The Dreams in the Witch House,” Henry Akeley to “The Whisperer in Darkness,” and Francis Thurston narrates “The Call of Cthulhu.” Dyer also appears in Lovecraft’s wider fictional network: he is mentioned in “The Shadow Out of Time,” where he is associated with another expedition. His restrained scientific voice contrasts with the increasingly terrifying discoveries he describes.