Killing Fields Mass Grave Cambodia

It is now over 40 years since the Khmer Rouge triumphed over the American-backed republican army. A victory that started what we know today as the Cambodian Genocide.

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The day that I visited the Killing Fields of Choueng Ek and S21 Prison (now the Tuol Sleng Genocide Museum), my heart broke in a million pieces. They call visiting these sort of sites ‘dark tourism’. But ‘dark tourism’ isn’t about the morbid history of a place.

I believe it is very important to learn about these dreadful events, so we don’t forget and make the same mistakes again. Besides, I don’t think it would be possible to understand Cambodia (or any other country) today without knowing about their recent history, no matter how harsh it is, so everyone should add the Killing Fields and S21 Prison to their list of places to visit in Cambodia.

Killing Fields Memorial Cambodia
This memorial in the Killing Fields holds more than 5,000 victims’ skulls


In the late 70s, during the Khmer Rouge brutal regime, almost 2 million people – over 25 per cent of the population – were killed and buried in so-called killing fields. The Khmer Rouge ordered the arrest and execution of all professionals and intellectuals, amongst other ‘suspects’. Pol Pot’s horrific regime wanted to wipe the country’s memory off and start afresh, ‘curing’ Cambodians from ‘memory sickness’ – any memories they might have of pre-revolutionary times. This starting-from-zero quest also involved destroying all existing infrastructure. Banks and hospitals were demolished, and schools were turned into prisons and execution centres.

S21 Prison Cambodia
The infamous S21 Prison, formerly a school, now the Tuol Sleng Genocide Museum

The notorious Prison S21 was one of those centres. It is estimated that it held between 14,000 and 20,000 prisoners, of which only 7 survived.

S21 Prison Cells Cambodia
The former classrooms were modified to hold tiny cells that held several prisoners at a time
S21 Prison Victims Cambodia
Victims of the Cambodian Genocide that were held at S21 Prison


There are only two survivors left, one of who is Chum Mey, an 87 year old mechanic. His life was only spared because he was good at repairing machines for Pol Pot’s soldiers. Nowadays, you can find him signing books at the former prison in Phnom Phen, always smiling and happy to take photos and have a chat with visitors.

Spending time in these two sites takes quite an emotional toll on you. It is not an easy day and what you learn is hard to digest. But you will leave with a better of understanding of Cambodia and its people, of their resilience and determination to survive despite all the horrors they have gone through.

S21 Prison Cell Torture Bed Cambodia
Classroom turned into torture chamber at Prison S21
S21 Prison Rules Cambodia
The Rules and Regulations of Prison S21
Killing Fields Tree Children Cambodia
The Killing Tree in the Killing Fields
Killing Fields Skulls Cambodia
Victims’ skulls in the Killing Fields Memorial

Getting there

The Tuol Sleng Genocide Museum is very accessible, as it is relatively central in Phnom Penh. However, to get to the Killing Fields, you will need to hire a tuk tuk driver for the day. It will cost around $15 USD whether you use it to get to both places or just one, and the driver will wait for you while you visit. Admission to both sites will cost $12 USD per person.

Don’t leave Cambodia without visiting Siem Reap and the magnificent Angkor Wat temple complex.

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Killing Fields and S21 Prison Cambodia
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  1. Kim says:

    Great post, Teresa. I’ve visited both S21 & the Killing Fields a couple of times and there’s no denying you can feel the horror of what happened there. I agree too, this part of history (along with other “dark tourism” sites) should not be ignored. They are valuable lessons for today.

    • Teresa says:

      Thanks Kim. These are certainly sobering sites, and I strongly believe that if we don’t learn from them we will for sure make the same mistakes again. And we must not let that happen.

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