"La Máquina del Tiempo" is a science fiction novel written by H.G. Wells and published in 1895. The story follows an unnamed protagonist, known as the Time Traveler, who invents a machine that allows him to travel through time. He journeys to the distant future, where he encounters two distinct species: the Eloi, a gentle and childlike race, and the Morlocks, who are more sinister and live underground. The novel explores themes of class struggle, evolution, and the consequences of technological advancement. As the Time Traveler navigates this new world, he reflects on the fate of humanity and the potential outcomes of societal changes. "La Máquina del Tiempo" is considered a foundational work in the genre of time travel literature.