A prison on Bajor, mentioned in the first season of Deep Space Nine as the place where the smuggler Ibudan served time for murder and where serious offenders can expect to be sent.
Kran-Tobal Prison is referred to in A Man Alone, the story of the Bajoran smuggler Ibudan. During the Occupation Odo arrested him for murdering a Cardassian officer and he was sent to Kran-Tobal, but the provisional government later released him, treating the killing of a Cardassian as no great crime.
Ibudan returns to the station and appears to be murdered in a holosuite, with all the evidence pointing at Odo. A mob gathers outside the security office before Bashir shows that the dead man was a clone, grown and killed by Ibudan to destroy the constable.
Ibudan is arrested again, this time for the murder of his own clone. In Babel, the Bajoran doctor Surmak Ren, abducted by Kira to make him work on a cure for the aphasia virus, warns her that she will end up in Kran-Tobal for kidnapping him.