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The Benxi Water Caves (Chinese: 本溪水洞; pinyin: Běnxī Shuǐdòng) is a partially submerged cavern system containing a forest of stalactites and stalagmites, located 26 kilometres (16 mi) east of Benxi, Liaoning Province, People's Republic of China. It was made a national park on January 10, 1994, and is
open to the public all year round. It was designated an "AAAAA"-class tourist attraction by CNTA in 2015. The giant 5-million-year-old cavern complex is lit by colored artificial lighting, and expands over 5,800 m (3.6 mi) with a maximal width of 70 m (230 ft), maximal ceiling height of 38 m (125 ft), an area of 36,000 m2 (8.9 acres) and a volume of over 400,000 m3 (520,000 cu yd). It has a subterranean river 3,000 m (1.9 mi) long, with an average depth of 1.5 m (4.9 ft) and maximal depth of 7 m (23 ft), and a daily discharge of 14,000 m3 (3,700,000 US gal). Currently 2,800 m (1.7 mi) of the cave has been developed for tourism, with a dock 300 m (330 yd) into the entrance and a 1,000 m2 (11,000 sq ft) docking bay large enough to park 40 boats. Temperature inside the cave is constant throughout the year, at around 12 °C (54 °F), though slightly warmer in summer than winter. In addition...
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