The Weather Hills were a significant range of hills in central Eriador, running approximately north-to-south between the Bree-land in the west and the river Hoarwell to the east. They were primarily known for being a desolate and dangerous area of rolling hills and ruins, with their most notable feature being Weathertop, or Amon Sûl, at the southern end. The name, which translates to "Hill of the Wind" in Sindarin, implied a consistently exposed and windy environment, a natural feature that provided commanding views of the surrounding flatlands for miles around.
Historically, the Weather Hills were an extremely strategic location in the ancient North Kingdom of Arnor. They marked a point where the borders of the three successor kingdoms—Arthedain, Rhudaur, and Cardolan—once met. The Dúnedain built a formidable watchtower, the Tower of Amon Sûl, on Weathertop's summit, which housed one of the powerful palantíri, or seeing-stones. This tower allowed Elendil to watch for Gil-galad's approach during the Last Alliance and became a highly contested prize during the civil wars and conflicts with the Witch-king of Angmar in the Third Age.
The hills bore the scars of these ancient conflicts. In T.A. 1409, the Witch-king of Angmar attacked and razed the fortress, leaving only a "tumbled ring" of broken stone that remained for centuries afterward. Despite the destruction, traces of former fortifications, like ancient dikes and earthworks, could still be found along the ridges, remnants of a time when the Dúnedain desperately fortified the area against the growing darkness of Angmar. By the time of The Lord of the Rings, the region was empty of permanent settlements but was a haven for wild animals and unsavory characters, including boars, wolves, goblins, and Orcs.The Weather Hills played a crucial role in Frodo Baggins' journey to Rivendell. Strider (Aragorn) led the hobbits through the northern, wilder parts of the hills after they left the Midgewater Marshes, avoiding the main East Road where the Black Riders were known to be active. It was at Weathertop that the hobbits found a message left by Gandalf and where, shortly after, they were ambushed by five Nazgûl, an encounter that resulted in Frodo being grievously wounded by a Morgul-knife before Aragorn managed to drive the wraiths away with fire.
The journey through the Weather Hills symbolized the hobbits' full immersion into the dangers of the Wild. The encounter at Weathertop was a pivotal, violent turning point, showcasing the historical significance of the seemingly desolate ruins. The region served as a poignant reminder of the fallen northern kingdom and the persistent shadow of evil in Middle-earth, an empty, windy landscape that nonetheless became the stage for one of the most dramatic confrontations of the early War of the Ring.


