Frostfire Steppe

The Frostfire Steppe is a grassland so named for its division between the scorching Yuan-Ti Desert and the icy Orion Jungle.
These grasslands are relatively tame and used by merchants traveling trading to and from Nomfaldür and the port town, Leviathan's Tooth.
The main mode of travel through the steppe is by riding birds, Ratibos.

Ratibo: large, flightless riding birds.