
An endangered red-spotted toothed toad (Oreolalax rhodostigmatus) is found during a scientific research at a 800-meter-deep cave of Wulong Karst National Geology Park, a UNESCO World Heritage Site, in Chongqing. (Photo: China News Service/Zhao Fengying)
Red-spotted toothed toad is endemic to central and south central China and lives in limestone caves in karst areas between 900 and 2,000 meters above sea level.

An endangered red-spotted toothed toad (Oreolalax rhodostigmatus) is found during a scientific research at a 800-meter-deep cave of Wulong Karst National Geology Park, a UNESCO World Heritage Site, in Chongqing. (Photo: China News Service/Zhao Fengying)

Experts carry out scientific research at a 800-meter-deep cave of Wulong Karst National Geology Park, a UNESCO World Heritage Site, in Chongqing.

An expert carries out scientific research at a 800-meter-deep cave of Wulong Karst National Geology Park, a UNESCO World Heritage Site, in Chongqing. (Photo: China News Service/Zhao Fengying)

An expert carries out scientific research at a 800-meter-deep cave of Wulong Karst National Geology Park, a UNESCO World Heritage Site, in Chongqing. (Photo: China News Service/Zhao Fengying)