They had come to the feet of stony hills, and their pace was slower, for the trail was no longer easy to follow. Here the highlands of the Emyn Muil ran from North to South in two long tumbled ridges. The western side of each ridge was steep and difficult, but the eastward slopes were gentler, furrowed with many gullies and narrow ravines. All night the three companions scrambled in this bony land, climbing to the crest of the first and tallest ridge, and down again into the darkness of a deep winding valley on the other side.
- The Two Towers (Book 3), Chapter 2
The Emyn Muil is a range of hills surrounding Nen Hithoel. Its spiky hills and deep valleys make it difficult to trespass. Large cliffs mark the range's western, southern, and eastern ends, further complicating traversal through the region.