The abundance of rich clay and running water has tempted pot makers from afar to travel to the hills of Sool and to build their treehouses and kilns beside the road, along which they trade their wares to the towns of Wildergorn.  The road is known as Potter’s Road and the craftsmen live there peacefully with the  woodland creatures who scurry out of the trees to hear the haunting sounds of the strange water-instruments which the Potters love to build and play.  The pots are transported by the tall land-craft that trundle slowly along the roads of Wildergorn, towed by the powerful Mussags.  These craft are constructed and inhabited by the Arns, a quiet nomadic people who carry news and goods on the lengthy journeys around Wildergorn, never staying long in one place, and on occasion drifting beyond the mountains into the Strangelands, to return much later with many a tale to tell around the feasting tables.
From The Book of Wildergorn