See Torture Dungeon Where British Man Rapes,Murder and Eat Children.

The first pictures of a stomach-turning torture chamber where a British-born Massachusetts resident planned to rape, murder and eat children have emerged.

Prosecutors are pushing for would-be cannibal Geoffrey Portway, 40, to be put away for 27 years after he confessed to plotting the heinous crimes. He will be sentenced next Tuesday.

Photographs taken by investigators of Portway's Worchester home in 2012 show an eerie staircase leading to a hidden basement room containing a 'child-sized homemade coffin,' a steel cage, handcuffs and a set of butcher's knives.

Portway, 40, pictured, pleaded guilty in May to solicitation to kidnap a child and distribution and possession of child pornography

 makeshift coffin and a cage

The sentencing papers, filed yesterday, include frightening excerpts from online chats Portway had with like-minded child pornographers and potential killers, including Florida puppeteer Ronald Brown who planned to kidnap children he knew through his local church. 

According to the Herald, Brown went as far as to send Portway a photograph of a young boy 'with lines drawn on him to identify the different cuts of meat.' 

The two chatted about kidnapping the boy, taking him to a rented house and eating him over several weeks before feeding the 'leftovers' to alligators. Brown has since been convicted.

Coffin: The homemade child-size boxn, pictured, was soundproofed

A forensic examination of the computers uncovered evidence of over 4,500 trades of child pornography between Portway and others.

Many of these trades involved Portway distributing child pornography to others based on their stated specific preferences, including images and videos appearing to depict dead children and the cannibalism of children.

'Clearly, the facts of this case were quite disturbing and we are grateful law enforcement acted when they did,' said United States Attorney Carmen Ortiz. 'I hope that this case send a clear message that we will prosecute to the fullest extent of the law those who participate in these types of activities.

Evidence: Investigators also found handcuffs, pictures, and knives

'Portway's guilty plea should serve as a stern warning to those inclined to abuse children or share images of child pornography: there isn't a place in the United States, on the Internet, or the planet in which you are truly safe. We will investigate you, we will prosecute you and we will bring you to justice.

Knives: Police also found a 'delux butcher set,' pictured, in Portway's home