Trevonian River
A river in central Thyatis. Flows from the Altan Tepes in the Barony of Buhrohur, through the Imperial Territories to join with the Mesonian in the Duchy of Retebius. First appeared in X1 (1981); first named in Dawn of the Emperors (1989), where it was labelled Trevanion River; changed to Trevonian River in TM2 (1989).
- Alatian Islands
- Alphatia
- Alphatian Sea
- Arm of the Immortals
- Bellissaria
- Blackmoor
- Borea
- Brun
- Chronological maps
- Davania
- Esterhold
- Fan-made maps
- Great Northway Lands
- Great Waste
- Hollow World
- Hule
- Hyborea
- Iciria
- Isle of Dawn
- Known World
- Laterre
- Minaea
- News
- Norwold
- Ochalea
- Orc's Head Peninsula
- Outer World
- Pearl Islands
- Replica maps
- Savage Coast
- Sea of Dread
- Sea of Steam
- Serpent Peninsula
- Skothar
- Suridal
- Updated maps
