Built with 4 foot thick stone walls and barred windows high in the ceiling, Lord Draimont’s Iron Hold prison held up to 40 inmates captive in cramped desperate conditions.
During a freak unnatural storm, several masked sorcerers destroyed the western wall to the cells, entered the prison and lead a mass prison break.
30 prisoners fled Iron Hold into the dark electrical storm and disappeared without trace. These prisoners ranged from murders, dark warlocks and spies of the empire.
8 prisoners were slain in the initial prison break and 2 were killed in later conflicts with the Royal Guard.
Following the breakout, civil war fell upon the region and the Iron Hold prison never received the repairs or required.
Once it fell into disrepair, it was quickly taken over by gnolls and has never been secure since.
Thanks to @thunderbrd1 for their suggestion of The Iron Hold as a name.