ANSTO radiocarbon facilities and scientists are featured in a new IMAX documentary film released in the United States.
Angkor 3D: The Lost Empire of Cambodia, a film by Australian director Murray Pope, is now screening at the in Los Angeles with a organised in association with the Cambodian government.
![Angkor film](https://www.ansto.gov.au/sites/default/files/styles/wysiwyg_image/public/2022-02/Angkor%20film.jpg?itok=7XhUEsNt)
The film unveils the mysteries behind the Angkorian Empire, its demise, including footage of Dr Quan Hua and the accelerator mass spectrometry facility at the Lucas Heights campus.
Pope came to ANSTO in late 2019/early 2020 and spent several days on-site, as he was featuring the work of scientists at Angkor in the production.
![Angkor film crew with Dr Quan Hua (left) in January 2020](https://www.ansto.gov.au/sites/default/files/styles/wysiwyg_image/public/2022-02/Angkor%20film%20crew.jpg?itok=oK_y-LgO)
At the time, Dr Hua was a member of a team working on a speleothem from a cave in southern Cambodia to reveal climate change during the medieval period.
Dr Hua has contributed to international collaborative research on Angkor and has taken several field trips to Cambodia.
Radiocarbon dating of the speleothem using accelerator mass spectrometry at ANSTO’s Centre for Accelerator Science, in collaboration with from the and from the , has helped to reconstruct climate variability for Cambodia for the last millennium. It covers the entire Angkor period (circa the 9th-15th centuries).