Barbara is a location featuring "countless burial mounds" on the northern shore of the southern continent where it borders the Sea of Torments. It is east of Beryl, the most ancient of the Jewel Cities. Barbara is mentioned just once, in The Silver Spike.
Barbara is the fourth named location in the long, overland odyssey traveled by the demon called Toadkiller Dog, who was following the trail of his new enemy, the Limper. After swimming the River Bigotes and the Hyclades, and passing through the Rani Poor, Toadkiller Dog "raced between" the burial mounds of Barbara. He then continued eastward, crossing, in order: the lifeless landscapes of Laba Larada, Khun, the Canyons of the Undead, and the ruins of the temple city of Marsha the Devastator; the populated province of Karsus; the Plain of Dano-Patha; the Mountains of Sinjian; and finally, the Straits of Angine and onward into the northern continent, to the Tower at Charm.