Yaolin National Forest Park features abundant vegetation types and the forest coverage rate exceeds 84.1%. The most special landscape inside the park is the natural caves that face up to the sky and are shaped like huge funnels. The landscape is vividly named Tian Dou Di Lou (literal meaning: sky funnel and ground leakage 天斗地漏). There are over 30 Tian Dou Di Lou inside the park, all of which are more than 100 meters in diameter and between 50 meters and 100 meters in depth, which are unique in East China.