Walls of the World
The Walls of the World were the walls that surrounded Arda. Outside them, through the Door of Night, there is the Void.
 See also
 Other versions of the legendarium
In earlier cosmology such as the Ambarkanta, the Walls of the World were called Ilurambar in Qenya and they bounded the layer of Vaiya.
- ↑ Robert Foster, The Complete Guide to Middle-earth
- ↑ J.R.R. Tolkien, Christopher Tolkien (ed.), The Silmarillion, "Quenta Silmarillion: Of the Voyage of Eärendil and the War of Wrath"