Rows and rows of cells line the cell block of Kulbak Prison. Thick stone walls line the block. Each cell is barred and locked from the outside. Prisoners are given a bed, a mattress, an itchy gray uniform, a warm meal, and not much else.

Lockdown is enforced each evening. Each morning, the cell doors open, and prisoners can move about the prison, all under the watchful eyes of the Construct guards.

The prison's exterior gates are said to be enchanted. - Lockup (LU)

You discover there is an entrance to the underground catacombs in the Cell Block.