Case Study
China's Magao Grottoes: Historical Preservation
The Magao Grottoes consist of 492 caves carved into a cliffside near Dunhuang, China. The caves contain hundreds of Buddhist
wall paintings and painted sculptures dating back to the 4th century A.D. As the site became a more popular tourist attraction
in the 1980s, there was a need to determine the impact of tourism on the paintings and sculptures. To this end, environmental
monitoring stations were installed in six of the caves in 1990. The stations monitor air temperature, relative humidity, surface
temperature, indoor and outdoor particulate matter, carbon dioxide, visitor count, and duration of visit. A weather station was
installed on the top of the cliff to collect baseline data.
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