
3-D Buddhas —
Viewers look at a digital representation of a 1,500 year old Buddhist grotto.

Portal to an ancient world —
The cave re-creation was developed by ALiVE -- the Applied Laboratory for Interactive Visualization and Embodiment at City University of Hong Kong.

Pioneering technology —
It uses pioneering virtual reality technology to bring the cave to life.

Digital tools —
A magnifying glass allows you to explore the virtual environment, which depicts seven figures known as medicine Buddhas.

Tiny details —
Details like faded incense burners, lutes and harps were drawn by hand with traditional brushes before being scanned and modeled in 3-D.

World heritage site —
The cave featured in the prototype is part of a larger complex located in the Chinese city of Dunhuang, once a Silk Road oasis and now a Unesco world heritage site.

Eternal tribute? —
The cave frescoes were created as eternal tributes to Buddha but are today fading away because of age and tourism pressures.

Under pressure —
The grotto depicted by the team at City University is already closed to tourists and only 70 of the 492 decorated caves are open to the public.

Faded frescoes —
A 50-strong team is documenting the heritage site through extensive high-resolution photography and 3-D laser scanning.