Firefly Water Cave and Underground Canyon, Yishui, Shandong 山东沂水萤火虫水洞·地下大峡谷

Location: China, Shandong, Yishui County, Linyi Google Maps Amap
Part of: National 5A Tourist Attraction
Nearby: Boshan Scenic Area 95km, Qingzhou Scenic Area 103km, Temple, Mansion and Cemetery of Confucius, Qufu 131km, Mount Tai (Taishan) 135km, Mount Yuntai (Jiangsu) 143km, Lingyan Temple 150km

The Firefly Water Cave and the Underground Canyon are two karst caves in Yishui County that form one scenic area. The Firefly Water Cave, at Yuandongtou, holds an underground river toured by boat, with fireflies living on the cave roof; the Underground Canyon is a long, narrow canyon inside the rock.