the forest of the sinkhole there are probably many species of small animals and plants unknown to science. The forest has shoulder-high vegetation and tall trees. Explorers found a large area of wild plantain (Heliconia) species at the bottom, as well as square bamboos (Chimonobambusa quadrangularis) with thorns 2 cm to 3 cm long growing around its joints. An unidentified species of eagle was also found inside the sinkhole, living in a family, after which the tiankeng was named. References Sinkholes of Asia Geologic formations of China Leye County