The Mirundân Root is a specially designed forge for focusing nature energy into enchanted items. It is also used for making living staffs; lengths of wood that can be crafted into staffs that keep all their properties as if they were still alive. The "forge area" is a thicket of briars and vines impervious to the elements. Inside this area is a craft shop where cold-wrought items were once made for Khazarkars battling the undead coming out of Dragur.
Getting to this forge requires either sneaking in or convincing Mirundân's sentinels that your purpose serves Nature.