In J. R. R. Tolkien's writings, Elves are the first fictional race to appear in Middle-earth. Unlike Men and Dwarves, Elves are immortal, though they can be killed in battle. If so, their souls go to the Halls of Mandos in Aman. After a long life in Middle-earth, Elves yearn for the Earthly Paradise of Valinor, and can sail there from the Grey Havens. They feature in The Hobbit and The Lord of the Rings. Their history is described in detail in The Silmarillion.
Victorian era Fairy painting: Edwin Landseer, Scene from A Midsummer Night's Dream. Titania and Bottom, 1851
Beowulf's eotenas [ond] ylfe [ond] orcneas, "ogres [and] elves [and] devil-corpses", inspiring Tolkien to create orcs, elves, and other races
Elf-shot, associated with "elf arrows", neolithic flint arrowheads sometimes used as amulets, was one of the hints Tolkien used to create his Elves.
Wood elves as portrayed in the 1977 Rankin-Bass version of The Hobbit look nothing like those in any other adaptation.
Middle-earth is the setting of much of the English writer J. R. R. Tolkien's fantasy. The term is equivalent to the Miðgarðr of Norse mythology and Middangeard in Old English works, including Beowulf. Middle-earth is the human-inhabited world, that is, the central continent of the Earth, in Tolkien's imagined mythological past. Tolkien's most widely read works, The Hobbit and The Lord of the Rings, are set entirely in Middle-earth. "Middle-earth" has also become a short-hand term for Tolkien's legendarium, his large body of fantasy writings, and for the entirety of his fictional world.
A detail of Middle-earth in one of Peter Jackson's film sets
Medieval Christian cosmology: heaven above, earth in the middle, hell below. Vank Cathedral, Isfahan.