From 1975 to 1979 the Khmer Rouge regime in Cambodia, under the rule of the ultra-communist leader Pol Pot, claimed the lives of up to two million people.
Millions were forced from the cities to work on communal farms in the countryside with the result that entire families died from execution, starvation, disease and overwork.
The Ramas, like so many others, lost close family members. Krishna Rama was killed in the last months of the regime as it crumbled and turned in on itself.
Yet the family had taken steps to protect their treasured photographs, burying them so they would not be found by the Khmer Rouge.
"We buried the images to hide our family's identity of a privileged life before the Khmer Rouge," says Vira Rama.
"The Khmer Rouge would conduct random searches, they looked for evidence that tied people to the city."
The regime was determined to purge people of wealth, status and education.
The regime fell in January 1979 and the Khmer Rouge melted back into society.
Like many families, the Ramas made the dangerous journey to the refugee camps on the border with Thailand, but not before they recovered their buried images.
The Ramas were lucky, receiving sponsorship from two US doctors working in a refugee camp in Thailand.
Fast forward to Phnom Penh 2015 and photographer Charles Fox, who has been working in Cambodia since 2005, received an email about his project Found Cambodia, which looks at family images pre and post-Khmer Rouge.
"I had wondered if anyone would submit images to the archive," says Charles.
"The Ramas were the first and it was one of the most poignant relationships I have ever developed," says Charles, who now splits his time between the UK and Cambodia.
Over a period of four years Fox has spoken at great length to Vira, and his wife Fe and family, about the significance of their collection;
The pictures have now been published by Charles in a book called Buried.
For Vira the message remains simple: "This is a photo story of my family's life before and after the Khmer Rouge regime.
"It is about my family, and many other families like mine, who endured and persevered through hardships of war, survived, sacrificed, and with new hope and optimism found healing, forgiving, peace, and happiness.
"It tells a story of our journey to a new life."
All photographs courtesy the Rama family / Charles Fox / Buried is published by Catfish Books.