The underworld had various names, some of which were used for the earth and the surface of the earth as well. Sumerian names are: a.rá, arali, bùr, ganzer, idim, ki, kir5, kiši, kukku (darkness), kur, kur.gi, kunugi / kurnugia (earth of no return), lam / lamma, lamḫu, uraš2, urugal / erigal (grave / great city) and ZÉ.