What would happen to the prisoners who escaped?

The first time Joseph tried to escape, he was placed in solitary confinement.

"It was crowded with prisoners, but not many were strong enollgh to escape. Some did escape, but most ofthem were caught and brought back, and the others died from the cold in the mountains."

"A group of six prisoners tried to escape, and ]oseph was one of them. But they were soon caught and brought back, and ]oseph was locked in a room alone for a month."