Photo taken on September 1, 2008 shows an illuminated grotto of the Reed Flute Cave in Guilin, South China's Guangxi Zhuang Autonomous Region.

Photo taken on September 1, 2008 shows an illuminated grotto of the Reed Flute Cave in Guilin, South China's Guangxi Zhuang Autonomous Region.

Photo taken on September 1, 2008 shows an illuminated grotto of the Reed Flute Cave in Guilin, South China's Guangxi Zhuang Autonomous Region.

Photo taken on September 1, 2008 shows an illuminated grotto of the Reed Flute Cave in Guilin, South China's Guangxi Zhuang Autonomous Region.

Visitors tour an illuminated grotto of the Reed Flute Cave in Guilin, South China's Guangxi Zhuang Autonomous Region, September 1, 2008.

Above are photos taken on September 1, 2008 showing illuminated grottos of the Reed Flute Cave in Guilin, South China's Guangxi Zhuang Autonomous Region.