Computers are set on fire, doors kicked from their hinges, common areas trashed, and a tractor is used to rip through fences.
This is the chaos inside Melbourne's worst prison riot.
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Inside Ravenhall riot
Vision shows the destruction after the Ravenhall riot. Seven News will reveal the exclusive CCTV inside the riot at 6pm tonight. (Vision: Seven News)
For the first time, CCTV footage has emerged revealing the chaos inside the maximum-security Ravenhall prison when up to 400 inmates rioted over the introduction of a smoking ban on June 30, 2015.
The footage, obtained by Channel Seven, shows inmates commandeering a tractor and driving it through chain-wire fences inside the prison grounds.
Objects were thrown at fleeing guards, while inmates wearing pillow cases as masks wielded metal poles and tennis racquets as weapons.
Inmates ripped up tables, chairs, desks and bedding, leaving them strewn through corridors and common areas.
Computers in an office area and a prison vehicle were set alight, before a large bonfire was lit in an outdoor exercise yard.
It took hundreds of heavily armed police and guards to end the 15-hour rampage. The damage bill topped $12 million.
Dozens of staff suffered physical and psychological injuries as a result of the mass riot, for which 102 men – both current and former inmates – were charged.