The nameless things of Moria, a terrifying presence in Tolkien's Middle-earth, are ancient, powerful, and unknowable entities lurking beneath the surface. Their existence pre-dates the recorded history of Middle-earth and is a danger to the light and life on the surface. The dwarves' relentless pursuit of wealth and resources in Moria inadvertently brought them into contact with these creatures, unleashing a profound and dangerous evil. Characters like Gandalf, Gimli, and Aragorn show their unease and fear of the nameless things, highlighting their overwhelming power and mystery. The creatures are beyond human comprehension, representing a primordial darkness that has always existed in the world, even more sinister than Sauron's influence.