"The Doom that Came to Sarnath" (1920) is an early short story by H. P. Lovecraft. It is written in a mythic/fairy tale style and is associated with his Dream Cycle. It was first published in The Scot, a Scottish amateur fiction magazine, in June 1920.
According to the tale, more than 10,000 years ago, a race of shepherd people colonized the banks of the river Ai in a land called Mnar, forming the cities of Thraa, Ilarnek, and Kadatheron (not to be confused with Kadath), which rose to great intellectual and mercantile prowess. Craving more land, a group of these hardy people migrated to the shores of a lonely and vast lake at the heart of Mnar, founding the metropolis of Sarnath.
But the settlers were not alone. At the other side of the lake was the ancient, grey-stone city of Ib, inhabited by a queer race who had descended from the moon. Lovecraft described them as "in hue as green as the lake and the mists that rise above it.... They had bulging eyes, pouting, flabby lips, and curious ears, and were without voice.