The Fencrest Foothills were a region in western Somnum composed of low bluffs, meandering foothills, and swampy lowlands fed by myriad rivers and brooks. These streams fed into the region's oceanic boundaries at the Longsnout Coast, Splitmaw Strait, and the Bay of Broken Tides; despite their arability, however, the lands were largely considered out of the way and free of trouble. The foothills were noted for their uncommonly large halfling populations, who set up small, self-sufficient hamlets and homesteads, undisturbed by the dangers of the west, east, and north.
The area became a highly populated region when white marble and precious gemstones were discovered below its hills. Communities of gold diggers and marble extractors developed over centuries, but the region was mainly known for its capital Cliffsunder, one of the largest cities in the Common League. The Port-Lords of Cliffsunder largely paid the halfling homesteads little attention, but helped built the Common Path which ran through the Fencrest, connecting Cliffsunder to cities beyond.