Mountains of Ash

From publisher blurb:

After it has crossed much of the Trackless Wastes, the Ember Road abruptly ends. What it once led to, no one knows, as there is not even a remnant left anymore. Beyond the end of that road is a wasteland of ash and rotten earth. However, it is said that somewhere far beyond those mountains of ash there lies a land not yet utterly laid to waste. There are those fool enough to believe and cross the Trackless Wastes in the vain hopes of finding such a place.