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The Baiheliang Underwater Museum in Fuling, Chongqing, stands out for pursuing the fish-eye water gauge mystery through its 18 stone fish carvings, the world's sole ancient method of using fish eyes to record Yangtze low-water levels over 1,200 years. Submerged 40 meters post-Three Gorges Dam, this UNESCO-praised site preserves 165 inscriptions as a "forest of steles underwater," blending hydrology, art, and folklore. Its unstressed container design lets non-divers witness the authentic ridge, hailed as the globe's first ancient water station.
Core experiences center on the stone fish water gauge, where one fish's eye marks the precise historical low-water line, tying into local beliefs of fish emergence signaling bountiful harvests. Explore the underwater corridor for close-up views of inscriptions from Tang Dynasty (763 AD) onward, including poetry by masters like Huang Tingjian. Elevators and windows provide multi-angle access to the 1,600-by-15-meter ridge, with relics like two Guan Yin figures and a white crane.
Target dry winter months (January-February) for water levels closest to ancient gauges, ensuring sharp fish-eye views; summers bring higher turbidity. Conditions stay stable at 12-15°C underwater with smooth escalator access. Prepare with ID, layers, and bookings; museum operates 8:30 AM-5 PM daily.
Fuling locals revere the stone fishes as harvest omens, linking hydrology to agriculture and river trade in Yangtze culture. Inscriptions capture community prayers for rain or drought relief across dynasties. Guides share tales of fishermen consulting the ridge, preserving Three Gorges heritage amid modernization.
Plan visits from November to February when low water levels mirror ancient gauges for optimal fish-eye visibility. Book tickets online via official Chongqing tourism sites or at Fuling Station to avoid queues; entry costs CNY 170. Allow 2 hours, as tours run every 30 minutes in Mandarin with English audio guides available.
Wear layered clothing for the cool 12-15°C underwater corridor year-round. Bring a light jacket, comfortable shoes for escalators, and passport for entry. Download a translation app for inscriptions; photography is permitted without flash.