A Comprehensive Guide to Cambodia’s Killing Fields
Explore the tragic history, memorial significance, and visitor experience of Cambodia’s Killing Fields, with a focus on Choeung Ek.

A Guide to Cambodia’s Killing Fields
Cambodia’s Killing Fields stand as haunting reminders of one of the darkest periods in the nation’s history. From 1975 to 1979, the Khmer Rouge regime orchestrated a brutal genocide, resulting in the deaths of up to two million Cambodians. While there are hundreds of mass grave sites across the country, the Choeung Ek Killing Fields near Phnom Penh have become the most iconic, drawing visitors worldwide seeking to understand the magnitude of the tragedy and pay their respects to its victims.
Understanding the History: The Khmer Rouge and the Rise of the Killing Fields
To comprehend the significance of Cambodia’s Killing Fields, it is essential to understand the regime responsible for their creation. The Khmer Rouge, led by Pol Pot, came to power in April 1975, envisioning a radical communist society. Their vision involved erasing Cambodia’s history and culture, dismantling urban life, and purging all opposition. All cities, including Phnom Penh, were emptied and the population forced into collective labor camps in the countryside.
The consequences were catastrophic:
- An estimated 1.5 to 2.5 million people died between 1975 and 1979—about a quarter or more of the population at the time.
- Victims included intellectuals, professionals, children, monks, and anyone perceived to be a threat to the regime.
- Causes of death ranged from execution and torture to starvation, forced labor, and disease.
What Are the Killing Fields?
The term “Killing Fields” refers broadly to the mass grave sites scattered throughout Cambodia where the Khmer Rouge executed and buried their victims. Estimates suggest there are around 300 to 500 of these sites, although only a few are marked and commemorated today.
The majority of executions occurred after prisoners were transported from “security prisons” such as the notorious S-21 (Tuol Sleng) in Phnom Penh. These prisoners often faced systematic torture before being sent to their deaths at one of the Killing Fields.
Methods of Execution and Mass Burial
- Executions were often carried out using blunt instruments such as pickaxes, hoes, bamboo, and farming tools, to save bullets.
- Victims, including children and infants, were killed en masse and buried in shallow graves—many still visible today.
- Some victims were forced to dig their own graves; many were so weak from starvation that the graves were shallow, often leaving remains barely covered.
The Choeung Ek Killing Fields: Cambodia’s National Memorial
Choeung Ek, located about 17 kilometers south of Phnom Penh, is the most recognized of all Cambodia’s Killing Fields. Originally a peaceful orchard and former Chinese cemetery, the area became the final resting place for an estimated 17,000 men, women, and children. The majority of victims had passed through S-21 before facing execution at Choeung Ek.
The Site Today
- Mass graves: Over 129 graves were discovered; 86 remain untouched while others have been excavated with care. Visitors can see depressed areas marking mass graves, some protected by roofs, others exposed to the elements.
- Memorial Stupa: The symbolic heart of Choeung Ek is the Buddhist memorial stupa built in 1988. This glass tower is filled with thousands of human skulls and bones, preserved and arranged by age and gender—a stark, sobering reminder of the magnitude of loss.
- Remnants and Relics: Human bone fragments, teeth, and bloodied cloth periodically emerge from the earth, particularly after rainfall. They are respectfully collected and placed in small shrines.
The Memorial Experience
Upon entering the grounds:
- Visitors are invited to remove shoes and hats before entering the stupa, as a sign of Buddhist respect.
- Flowers and incense can be placed before the stupa in remembrance of the victims.
- Throughout the site, signage describes the site’s history and provides context, ensuring a respectful, educational experience for all.
The Tuol Sleng Genocide Museum: Partner to Choeung Ek
The fate of most Choeung Ek victims was sealed at Tuol Sleng (S-21), a former high school turned torture and detention center in Phnom Penh. An estimated 20,000 people passed through S-21, subjected to horrific interrogations and torture before being transferred to Choeung Ek for execution.
The Tuol Sleng Genocide Museum, open to the public, preserves thousands of photographs and detailed records of these victims, connecting faces and stories to the graves at Choeung Ek. Visiting both sites provides a complete and devastating account of Cambodia’s genocide.
The Lasting Impact: Memory, Memorialization, and Legacy
The Killing Fields are not just sites of atrocity—they are also places of memory, collective mourning, and resilience. Cambodians continue to grapple with their tragic past, striving to educate visitors and younger generations while fostering reconciliation and healing.
- Memorial ceremonies are held annually, particularly on May 9th, to honor victims and promote remembrance at Choeung Ek.
- The site forms a central part of Cambodia’s educational and memorial initiatives, including collaboration with international partners, for genocide prevention and human rights awareness.
- In 2025, Choeung Ek was designated a UNESCO World Heritage Site—securing its protection and international recognition.
Visiting the Killing Fields of Choeung Ek
For many travelers to Cambodia, visiting Choeung Ek is a profoundly moving and educational experience. Awareness of the site’s cultural and religious significance—and expectations for visitor conduct—is essential for a respectful visit.
What to Expect
| Feature | Description |
|---|---|
| Distance from Phnom Penh | Approx. 17 km south; reachable by tuk-tuk, car, or organized tour |
| Opening Hours | Usually open daily, hours may vary seasonally |
| Visitor Facilities | Audio guides in multiple languages, maps, and signage; basic amenities on site |
| Admission Fees | Modest entry fee, supporting site preservation and education |
Essential Etiquette and Advice
- Dress modestly to respect the site’s solemnity and religious context.
- Photography is allowed but always be mindful and respectful—particularly inside the stupa or near the mass graves.
- Keep noise to a minimum and avoid inappropriate actions such as walking on graves or touching remains.
- Do not remove any objects, bones, or relics from the site.
Remembering the Victims: Stories and Survivor Testimonies
Although the statistics are staggering, the true horror of the Killing Fields comes to life in the stories of survivors, families, and communities. Many Cambodians lost relatives whose burial places may never be known. Survivors continue to share testimonies in books, documentaries, and guided tours, giving voice to those lost and underscoring the ongoing effects on Cambodia’s national psyche.
Efforts to document names, stories, and photographs continue at institutions like the Tuol Sleng museum and the Documentation Center of Cambodia, helping future generations comprehend the scale and intimacy of the genocide.
The Killing Fields in Popular Culture
The tragedy of Cambodia’s Killing Fields has entered the global consciousness through literature, art, and especially film. The 1984 film The Killing Fields dramatized these events for an international audience, earning wide acclaim and directing global attention toward Cambodia’s suffering. The story continues to inspire creative and educational works dedicated to remembrance and justice.
FAQs About Cambodia’s Killing Fields
What are the Killing Fields?
The Killing Fields are numerous mass grave sites across Cambodia, most notably Choeung Ek, where victims of the Khmer Rouge regime were executed and buried between 1975 and 1979.
How many people died during the Cambodian genocide?
Estimates vary, but between 1.5 and 2.5 million Cambodians—or up to a third of the country’s population at the time—died as a result of execution, starvation, overwork, and disease.
Where is Choeung Ek located?
Choeung Ek is about 17 kilometers (11 miles) south of Phnom Penh, Cambodia’s capital city.
Can visitors still see evidence of atrocities at the site?
Yes, visitors can see the memorial stupa filled with thousands of skulls and bones, as well as marked mass graves where bones and relics sometimes surface.
Is it appropriate for tourists to visit the Killing Fields?
Yes, visitors are welcome and their presence helps support preservation and education. However, it is important to behave respectfully and with sensitivity due to the site’s tragic significance.
Practical Information for Visitors
- Best time to visit: November to April (dry season) for comfortable travel conditions.
- How to get there: Accessible by tuk-tuk, taxi, or guided tour from Phnom Penh. Many combine a visit to Choeung Ek with Tuol Sleng Genocide Museum in a single day.
- Guided tours and audio guides: Highly recommended to gain deeper insight into the events and individuals commemorated.
Conclusion: Resilience and Remembrance
Today, Cambodia’s Killing Fields represent not only a site of mourning and remembrance but also resilience, education, and hope for the future. Visiting sites like Choeung Ek imparts a deep understanding of the consequences of unchecked tyranny and the importance of human rights, justice, and reconciliation.










