Guangxi Zhuang Autonomous Region: Home to many of these "heavenly pits," including clusters of sinkholes in Leye County, some being the world's largest and deepest.
Yunnan Province: Another significant area where rare plants, like the Petrocosmea grandiflora and Whytockia chiritiflora, have been rediscovered.
Hubei Province: Also features new sinkhole discoveries with lush forests at their bottoms.
