where is this place located?
It is the fictional setting, describing the human-inhabited world, that is, the central continent of the Earth.
Middle-earth
Middle-earth is the fictional setting of much of the English writer J. R. R. Tolkien's legendarium. The term is equivalent to the term "Miðgarðr" of Norse mythology, describing the human-inhabited world, that is, the central continent of the Earth in Tolkien's imagined mythological past. 
lord of the rings what does the ring represent Ring of Power what is its purpose? It was forged by the Dark Lord Sauron during the Second Age to gain dominion over the free peoples of Middle-earth.
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Middle-earth [SEP] Introduction
Middle-earth is the fictional setting of much of the English writer J. R. R. Tolkien's legendarium. The term is equivalent to the term "Miðgarðr" of Norse mythology, describing 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 for the legendarium and Tolkien's fictional take on the world. Middle-earth is the main continent of Earth ("Arda") in an imaginary period of the Earth's past with the end of the Third Age about 6,000 years ago.