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IntermediateShore Dive
Bonne Terre Mine
Missouri, United States
Depth40–60 ft (12.2–18.3 m)
AccessShore
Cert LevelOpen Water (advanced Bear Trails require demonstrated skills)
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Visibility
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Water Temp
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Sea State
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Best Time
Year-round; conditions are constant
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A flooded former lead mine in Bonne Terre, MO, holding a billion-gallon underground lake with around 100 ft visibility and a constant 58 F water temperature. Twenty-four numbered dive trails wind past pillars, ore carts, scaffolding and other mining artifacts; all dives are guided by staff dive guides with an assigned safety diver. New visitors must complete trails 1 and 2 before progressing, and advanced 'Bear Trail' dives venture into unlit sections for proven divers. Operated by West End Diving as a commercial dive resort.
Quick Facts
Depth Range12.2m – 18.3m
CertificationOpen Water (advanced Bear Trails require demonstrated skills)
Gear7mm wetsuit or drysuit, dive light; tanks and weights typically included with the dive package
HazardsOverhead mine environment, cold 58 F water, unlit side passages, depth on advanced trails
cave
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