DDDD: Mercenary Menagerie & The Princes of the Apocalypse
The Long Road runs north-south through the valley connecting the southern coastal metropolis with the inland north, along the Spine of the World: Longsaddle, Mirabar, and Luskan. The Spine of the World is a mountainous barrier to the freezing north, and home to all manner of monstrous creatures, most prominently the Orc Kingdom of Many Arrows. Along the Long road, from north to south, are the towns Triboar, Westbridge, Red Larch, and Amphail.
The River Surbrin, the Dessarin River and the Laughingflow join at Yartar, carrying trade from the north and northeast by way of the Silver Marches (and its capital Silverymoon); Mithral Hall to the north; Citadel Felbarr, Sundabar, and Citadel Adbar to the east. Between Silerymoon and the valley lay The Evermoors, a home to trolls for ages. The rivers join together at Yartar, and continue south under the Stone Bridge (an ancient dwarven monolith), through the Dessarin Valley and Sumber Hills and to the ocean by Waterdeep.
Although this region is not considered the "Savage Frontier", it is not wholly civilized.