The Gullet

Background
''This tunnel was carved into the steep ridge of the vale foothills of Kithicor by halfling engineers. It was a great feat that no doubt employed the direction of a dwarven miner's guild. The Gullet was one of two great tunnels leading into the halfling city Rivervale. The natural defense of the steep hills kept the isolated vale safe from the dangerous wilds beyond. - (Source: Bootstrutter's Field Guide to the Misty Thicket)''