The hobbits were glad to leave the cheerless lands and the perilous Road behind them; but this new country seemed threatening and unfriendly. As they went forward the hills about them steadily rose. Here and there upon heights and ridges they caught glimpses of ancient walls of stone, and the ruins of towers: they had an ominous look. Frodo, who was not walking, had time to gaze ahead and to think. He recalled Bilbo’s account of his journey and the threatening towers on the hills north of the Road, in the country near the Trolls’ wood where his first serious adventure had happened.
- The Fellowship of the Ring (Book 1), Chapter 12
The Trollshaws are an upland woodland located in the former kingdom of Rhudaur. While many castles and towers littered the tops of its hills in the days of the kingdom of Arnor, only their ruins remain now. Over the past centuries, the Trollshaws have mainly been home to Stone-trolls that have made the journey along the East Road increasingly dangerous.