In J. R. R. Tolkien's Middle-earth high fantasy writings, Helm's Deep was a large valley in the north-western Ered Nimrais (White Mountains). The valley was described as being blocked over its entire width by the natural series of hills called Helm's Dike and behind that lay the fortress of Aglarond or the Hornburg, at the entrance to the Glittering Caves. Continue reading to see where he may have gotten the inspiration for Lord of the Rings.
After his father's death, Tolkien's son Christopher published a series of works based on his father's extensive notes and unpublished manuscripts, including The Silmarillion. These, together with The Hobbit and The Lord of the Rings form a connected body of tales, poems, fictional histories, invented languages, and literary essays about a fantasy world called Arda, and Middle-earth within it.