Hesstur or Hesturr was once one of the eight founding cities of the Hypatian Empire.
The city was destroyed during the Fall of Hesstur.
The remains of the city were left in ruin and quickly took by the wilderness. Large colonies of rats inhabit the underground, and the cats (and Wistala) know the place as Tumbledown. Wistala and Yari-Tab explored Tumbledown in search for coins and rats.