Anauroch

A huge desert, Anauroch was created by the demise of Netheril, and is sometimes called The Wall that near divides the Heartlands.

Empire of Shadows
The Empire of Shadows is nebulous country in southern Anauroch, mainly consisting of whatever territory the City of Shade controls at any given time. The Shadovar are currently striving to make the Empire of Shadows into a cohesive and permanent nation.

Hlaungadath
Hlaungadath is one of the three floating cities that Mystra saved during the destruction of Netheril. It is a city that landed near the High Ice and was eventually abandoned. The drow in the War of the Spider Queen series arrive here by means of a portal. They are forced to flee after they are set upon by lamias (humanoid lions that work magic) and their legions of asabis.

Reghed
Reghed, or High Ice, is a frozen wasteland located on a plateau in northern Anauroch.

Resources
The Forgotten Realms Campaign Setting, Ed Greenwood, Sean K Reynolds, Skip Williams and Rob Heinsoo; 2001 Wizards of the Coast

Anauroch, Ed Greenwood; TSR 1991