gptkbp:instance_of
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gptkb:cave
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gptkbp:accessibility
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public tours available
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gptkbp:area
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gptkb:Akiyoshido_Park
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gptkbp:associated_with
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gptkb:Akiyoshido_Onsen
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gptkbp:cave_system
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gptkb:Akiyoshido_Hall
gptkb:Akiyoshido_National_Park
gptkb:Akiyoshido_Onsen
gptkb:Akiyoshido_Park
gptkb:Kōbō_Cave
gptkb:Kōyō_Cave
gptkb:Shirakawa_Cave
gptkb:Crystal_Cave
gptkb:Akiyoshido_Cave
horizontal cave
Grotto of the Gods
Waterfall Cave
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gptkbp:climate
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cool and humid
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gptkbp:conservation_status
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gptkb:protected_area
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gptkbp:discharge
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Akiyoshido River
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gptkbp:discovered_by
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gptkb:Kōsuke_Kawai
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gptkbp:environment
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subterranean ecosystem
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gptkbp:features
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stalactites
stalagmites
underground rivers
large chambers
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gptkbp:formation_date
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approximately 300 million years
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gptkbp:geological_formation
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gptkb:limestone
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https://www.w3.org/2000/01/rdf-schema#label
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Akiyoshido limestone cave system
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gptkbp:is_explored_in
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ongoing research
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gptkbp:length
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over 100 kilometers
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gptkbp:location
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gptkb:Yamaguchi_Prefecture,_Japan
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gptkbp:notable_features
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gptkb:Akiyoshido_Hall
gptkb:Crystal_Cave
Grotto of the Gods
Waterfall Cave
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gptkbp:open_to_public
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gptkb:1955
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gptkbp:surrounding_area
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gptkb:Akiyoshido_National_Park
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gptkbp:tourist_attraction
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yes
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gptkbp:type
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karst cave
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gptkbp:visitors_per_year
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approximately 300,000
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gptkbp:bfsParent
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gptkb:Akiyoshido_Cave
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gptkbp:bfsLayer
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6
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