A largely unnamed area of rolling plains stretching from the Greypeak Mountains to the North down and channeled by the Chelimber River on the East and the Serpent’s Tail on the West until they joined at the delta to form the Winding Water to the South. This piece of land has been claimed by one kingdom or another from the beginnings of civilizations in Western Faerun but none have survived and even the permanent settlements have been reduced to overgrown ruins and vanished into the untamed wilderness. Gur nomads, forlorn refugees, wary explorers, and wayward emigrants are the least hostile encounters one would find wandering this vast range; however, the perils are too numerous to list more than a handful from the reptilian peoples of the Serpent Hills, trolls of the High Moor, the slimy denizens of the Marsh of Chelimber, goblinoid bands roaming the Crescent Plain, and forays of dragons from every peak and gully from the surrounding high terrain to flights of them surging out of the aptly named Forest of Wyrms.
Though this plain is almost absurdly dangerous in the present, the Crescent Plain fairly blossomed with fertile land and settlements filled with whatever race of peoples held sway over the region. Elven Kingdoms, Dwarven Kingdoms, and Human Kingdoms all tried their hand at taming the plain and securing the region for peaceful harvests but ruin befell all their endeavors until nothing is left today. Occasional reminders of the past are still found as some stone roads that seem to start and end nowhere, the foundation of a cluster of buildings sticking out of the ground, or hardier artifacts found in clusters where they were abandoned or where their doomed owners died.