Inmates at ‘worst prison on Earth’ are forced to do horrific thing every night that people think is 'inhumane'

There are prisons around the world which have a reputation for being terrible places to be incarcerated in.

Places where conditions are described as 'inhumane' and some people have been thrown in and 'left to rot', unless they can bribe their way to a more comfortable cell.

However, when it comes to the 'worst prison on Earth' there's a new challenger for that title after El Salvador's maximum security prison CECOT (Centre for the Confinement of Terrorism) was opened last year.

It's one of the largest prisons in the world, capable of holding up to 40,000 inmates, and conditions inside the walls have been heavily criticised by human rights groups.

It has been described as a 'concrete and steel pit' by former member of the United Nations Subcommittee for the Prevention of Torture Miguel Sarre.

This mega-prison in El Salvador was opened last year and already contains thousands of inmates. (Alex Pena/Anadolu via Getty Images)

He claimed that since people weren't being released from the prison it was a way for the El Salvadorean government 'to dispose of people without formally applying the death penalty'.

Getting out would be hard to do, considering the prison has an armoury, video surveillance, walls topped with barbed wire and an electric fence surrounding the place.

Instead they're stuck inside cells containing 'modules', which contain two toilets, two washing basins and 80 bunks to sleep in for more than 100 inmates.

One particular feature of the prison slammed as 'inhumane' is that the bunks don't have mattresses, prisoners instead get one thin blanket and they will have to sleep on the bare metal frame of the bunk.

There is precious little to do in the cells. Each cell has two Bibles to read, but other than 30 minutes of shackled exercise per day there is nothing to occupy their time.

They'll sleep on hard metal bunks with no mattresses or pillows for the rest of their lives. (Alex Peña/Getty Images)

The inmates spend the rest of their lives on these bare metal bunks and will never sleep upon a mattress again.

Every inmate wears a white shirt and shorts, and they have their heads shaved every five days.

Prisoners are forced to eat with their hands, as knives and forks are considered a risk to pass over.

There are also no visitation rights for those incarcerated in CECOT, nor are they allowed to have phone contact with the outside world.

The mega-prison may soon have imitators elsewhere in the world as a number of other countries have indicated they'd build facilities similar to CECOT.