In J. R. R. Tolkien<span>'s </span>Middle-earth legendarium<span>, the </span>Lonely Mountain<span> (</span>Sindarin Erebor<span>) is a mountain in the north of </span>Rhovanion<span>. It is the source of the </span>Celduin<span> River, and the location of the </span>Kingdom under the Mountain<span>. The town of </span>Dale<span> lies in a vale on its southern slopes.</span>
