Even with all that security inmates have escaped. You would be surprised at the ingenuity of inmates behind bars.
How true.
They have lots of time on their hands to be creative.
Nevertheless in a high security prison possibly 1 may escape & the other 99 attempts they get nabbed.
Min. security prov. jails with no fence ( honor system ) escape is near 100%.
Saying that AaronWilde made the point & myself asking "Where are the back up plans should there be a break?"
There were zero.
Say again that there via common sense should be 2 walls of dirt & main pipe(s) & pumping stations to divert any break into another back up pond.