The Great Scarp is a mountain range in southeastern Invinni. For nearly four thousand miles, it extends in a northeasterly to easterly direction from the Grey Mountains in Makael and Nither, and across the southern and eastern edges of Ghananda along to the middle of Firvell where it peters out into hills. Several peaks reach 15,000 feet in places.
It's so named as the southern edge of it between Ghananda and Darna is in fact an escarpment with very high cliffs.
There are very few safe passes across it. The Vale of Yotu between Ghananda and Darna is one such, and Gyrsto's Gap between Parrence and the Greywind Plains region south of Heddig. Both passes are heavily guarded.