In 1990, archaeologist Richard Wright flew half way around the world to unearth a mass grave in Sernyky, Ukraine as part of an Australian Nazi war crimes investigation.

The site contained more than 500 bodies of Jewish people who had been killed in a mass execution.

Richard's findings were used in the war crimes trial of Ivan Polyukhovich. He had fled to Australia after World War Two.

Decades later Richard recounts his experience to Alex Collins.

This programme contains destressing details.

(Photo: Mass grave in Sernyky. Credit: Sydney Jewish Museum)