Many dozens of mass graves are visible above ground, many which have not been excavated yet.
Commonly, bones and clothing surface after heavy rainfalls due to the large number of bodies still buried in shallow mass graves.
) are a number of sites in Cambodia where collectively more than a million people were killed and buried by the Khmer Rouge regime, during its rule of the country from 1975 to 1979, immediately after the end of the Cambodian Civil War (1970–1975).
The mass killings are widely regarded as part of a broad state-sponsored genocide (the Cambodian genocide).
As a result, Pol Pot has been described as "a genocidal tyrant." Researcher Craig Etcheson of the Documentation Center of Cambodia suggests that the death toll was between 2 and 2.5 million, with a "most likely" figure of 2.2 million.
People were often encouraged to confess to Angkar their "pre-revolutionary lifestyles and crimes" (which usually included some kind of free-market activity; having had contact with a foreign source, such as a U. missionary, international relief or government agency; or contact with any foreigner or with the outside world at all), being told that Angkar would forgive them and "wipe the slate clean." They were then taken away to a place such as Tuol Sleng or Choeung Ek for torture and/or execution. In order to save ammunition, the executions were often carried out using poison, spades or sharpened bamboo sticks.In 1979, Vietnam invaded Democratic Kampuchea and toppled the Khmer Rouge regime.The Cambodian journalist Dith Pran coined the term "killing fields" after his escape from the regime.Visa and other entry and exit conditions (such as currency, customs and quarantine regulations) can change at short notice.Contact the nearest Embassy or Consulate of Cambodia for up-to-date information.