J. R. R. Tolkien's The Fall of Gondolin is a 2018 book of fantasy fiction by J. R. R. Tolkien, edited by his son Christopher. The story is one of what Tolkien called the three "Great Tales" from the First Age of Middle-earth; the other two are Beren and Lúthien and The Children of Húrin. All three stories are briefly summarised in the 1977 book The Silmarillion, and all three have now been published as stand-alone books. A version of the story also appears in The Book of Lost Tales. In the narrative, Gondolin was founded by King Turgon in the First Age. The city was carefully hidden, enduring for centuries before being betrayed and destroyed. Written in 1917, it is one of the first stories of Tolkien's legendarium.