Caradhras is the mountain above the Mines of Moria in J.R.R. Tolkien’s Middle-earth. It is one of the three great peaks above Khazad-dûm, the underground realm more commonly called Moria.
Caradhras is also known as the Redhorn because of the reddish appearance associated with its summit. The Fellowship of the Ring attempts to cross the Redhorn Pass, but severe snow and an apparent storm force the travelers to abandon the route. They then choose the gates of Moria instead, beginning a much more dangerous passage beneath the mountains.
The other two peaks of the trio are Celebdil, the Silverlode, and Fanuidhol, the Cloudyhead. These names can cause confusion because Celebdil is the mountain associated with the Bridge of Khazad-dûm and Gandalf’s battle with the Balrog. Caradhras itself is not the underground mine; it is the mountain whose pass and surrounding rock overlook Moria.