| Category | Forests |
| Continent | Arboreal |
| Region | Elrohir MithrandÃr |
| Map | Telmiril |
The ancient primeval forest of Thangolos lies within the realm of Elrohir MithrandÃr. This dense, shadowy place is home to towering, colossal trees. Numerous rocky hills and ravines make traversing the forest a challenging endeavor. Abundant streams, pools, and lakes dot the landscape, some concealing the submerged remnants of a lost civilization that once flourished here. Situated between the Bullvar Ika and Syrmal mountain ranges, Thangolos is fed by numerous waterways, some of which plunge through sinkholes into the Underdark below. The forest's southern extent terminates at the wastelands surrounding the Magnothor volcano.