Confronting Genocide: A Trip Around the Killing Fields of Phnom Penh

Between 1975 and 1979, Cambodia suffered a genocide resulting in the deaths of an estimated 1.5 to 3 million people.

Instigated by the Khmer Rouge – the followers of the Communist Party of Kampuchea – after their victory in the Cambodian civil war and led by politician, revolutionary and former novice Pol Pot, the resulting brutality nearly wiped out a whole generation and left an indelible scar across the entire country.

The totalitarian dictatorship saw the government move urban dwellers to the countryside to work on collective farms and forced labour projects, and attempts to enforce agricultural reform, based on total self-sufficiency, saw thousands dying due to disease and famine.

s-21, phnom penh

During the genocide, the regime targeted a vast cross-section of the population it deemed ‘enemies’: professionals, intellectuals (including anyone who wore glasses), former government officials, monks, ‘economic saboteurs’ and ethnic minorities were all subjected to arrest, torture and eventual execution.

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The most notorious of the execution centres was the former Chao Ponhea Yat High School, taken over by the Khmer Rouge and transformed into Security Prison 21 (S-21). Known as Tuol Sleng and surrounded by an electrified fence, it is estimated to have housed up to 20,000 inmates between 1975-1979, all of whom were kept in crude cells and tortured in converted classrooms.


Prisoners experienced regular beatings, with methods such as electric shocks, sleep deprivation and waterboarding deployed to extract whatever confession of supposed treasonous activities the Khmer Rouge was seeking. The culling even saw inmates skinned alive, while medical experiments, without the aid of anaesthetics, were also employed.

As paranoia among the party members grew, so did the purge. Many loyal activists and their families were eventually brought to Tuol Sleng, charged with ‘espionage’ activities and suffering the same fates as the other prisoners.


S-21 remains an eerily quiet place, located down a nondescript road in Phnom Penh. Visitors will struggle to comprehend the sheer scale of the atrocities committed there. It is not uncommon to sense the retreat of joy, hope and contentment as the cramped conditions and rudimentary torture devices reveal themselves, a lone bird call breaking the spell of the wreckage of this most heinous of genocides.

After interrogation, the inmates were transported to Choeung Ek extermination centre, a former orchard on the outskirts of Phnom Penh and the best-known of the Killing Fields sites where the Khmer Rouge executed over one million victims.

After the regime fell, the discovery of mass graves revealed the final resting place of innumerable political prisoners. Today the site is a serene yet sombre place: forty-three of the 129 graves have been left untouched and it possible to see fragments of bones and clothes among the disinterred pits, while the Memorial Stupa houses more than 8,000 skulls behind clear glass panels. Many bear the entry and exit wounds of bullet executions.


A tour around both areas is a sobering experience. For those far removed from what happened, it is surreal encountering the results of such a traumatic period within living memory. The human cost of the purge is unimaginable, as is the loss, and both sites stand testament to man’s inhumanity to man.

Things to know:

Neither site is for the squeamish.

Tuol Sleng Genocide Museum (S-21 Prison): Located at Street 113, Boeng Keng Kang 3, Chamkar Morn. Admission is $3. Call +855 23 300-698. Opening hours are daily from 7.00am to 5.30pm.

The Killing Fields of Choeung Ek: Located about 40 minutes south of Phnom Penh, tuk-tuk should cost around $10 including stopping at Tuol Sleng. Admission is $6 including audio tour, $3 without. Opening hours are daily from 7.30am to 5.30pm.

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