The Glittering Caves, known in Sindarin as Aglarond (meaning "Glittering Cave" or "Cave of Splendour"), are a vast and beautiful system of caverns located deep within the [[White Mountains]] (Ered Nimrais), directly behind the fortress of [[Helm's Deep]] in [[Rohan]]. Renowned for their incredible natural beauty and mineral formations, they became a significant refuge during the [[War of the Ring]] and later a new settlement for the [[Dwarves]].
The Glittering Caves are a natural formation, carved out over millennia by subterranean waters within the limestone bedrock of the [[White Mountains]]. While their existence was likely known to the local inhabitants of the region, such as early men of the mountains and later the [[Rohirrim]], they gained widespread prominence during the [[War of the Ring]].
The Glittering Caves are described as a labyrinthine network of vast caverns and winding passages. Their most striking feature is the incredible array of mineral formations that adorn every surface: