HM Prison Barwon or informally Barwon Prison, an Australian high risk and maximum security prison for males, is located from the township of Lara, near Geelong, Victoria, Australia. The facility is operated by Corrections Victoria, part of the Department of Justice & Community Safety of the Government of Victoria. The prison provides accommodation and services for remand and sentenced prisoners detained under Victorian and Commonwealth legislation. Barwon Prison is located adjacent to the 559-bed medium security Marngoneet Correctional Centre, opened in 2006. History Barwon was built to cater for demand due to the recent closures of HM Prison Geelong in 1991 and HM Prison Pentridge in 1997. Construction of the prison commenced in 1986. The works were carried out by Thiess Contractors. It was completed in October 1989 and the first prisoners were received in January 1990. Barwon is the only Victorian maximum security prison located outside the Melbourne metropolitan area. Accommodation units Barwon provides accommodation and services for maximum security mainstream prisoners including a 20-bed facility for high security prisoners and a 60-bed facility for maximum security protection prisoners. A campus of the Box Hill Institute of TAFE operates at the prison providing a corrections education program. The prison is split into many separate units including: Acaciaa high security management unit that is used to accommodate high risk prisoners. This unit can hold up to 24 prisoners in 4 separate areas, and is the oldest management unit within the prison. Banksiaa management unit for prisoners requiring close supervision or protection. All cells in this unit are single cells. Hoyaa protection unit which houses prisoners who, due to the nature of their crimes, are considered as at risk being housed alongside mainstream prisoners. Initially built as a demountable structure, this unit has remained as a permanent structure and is separated from all the other units. Cassiaa mainstream unit which is classed as the reception unit for mainstream prisoners. This unit features both single and double cells and can house up to 80 prisoners. Diosmaa mainstream unit which is seen as a first stop after Cassia, and houses prisoners who don't have lengthy sentences. Eucalypta mainstream unit used to house older, more settled long term prisoners. Grevilleaopened in April 2003, housing segregation prisoners. This unit housed protection prisoners until mid 2015, when its prisoners were transferred to make way for the incoming prisoners involved in the Metropolitan Remand Centre Riots. In