The Trans Caledon Mountain Range is the dominant terrain feature of northern Caledon. It runs west-to-east through six sims: Eyre, Regency, Stormhold, Wellsian, Morgaine, and Penzance.
Features within the range include:
- Stormhold Gap, a pass in Stormhold near the midpoint of the range.
- Sky Mountain, ripped from the earth and lifted many meters above the surface in central Morgaine. The strait thus created flows north to Brigadoon and eventually to the sea.
- A cavorite mine shaft is found in Wellsian.