Fasiltum

Fasíltum: "The City of the Chiming Skulls"
Large Metropolis; Population: 800,000 (600,000 - 1,000,000)

Convicted felons heads sway from silver chains along the ramparts of the outer walls.When a breeze blows off the dunes of the desert, the skulls dance together among bells of glass and metal.

Source: Mitlanyal p.189

Fasiltúm has mines.

Source: Source: "Tekumel Lineages, Clans, and Notes 2" Tekume Yahoo group