Prison barb wire fence

Prison fence is a physical barrier made of metal that surrounds a prison or correctional facility. It is designed to prevent inmates from escaping and to create a secure boundary between the inside and outside of the prison. Prison fences are typically tall and topped with razor wire or other deterrents to discourage climbing or scaling. 

Prison fence is an essential part of the security infrastructure of a prison and play a crucial role in maintaining order and preventing unauthorized access.